Experts say ‘herd immunity’ could conquer COVID-19. But is it even possible?

“It’s not hard to calculate if you knew all the numbers to put in,” said Dr. Marc Lipsitch, director of the Center for Communicable Disease Dynamics at the Harvard T.H. Chan School of Public Health. “What’s hard is to be sure about what numbers do go into it.”

Can herd immunity stop COVID-19?

In an April 1, 2021, article in the Boston Globe, Marc Lipsitch, professor of epidemiology and director of the Center for Communicable Disease Dynamics at Harvard T.H. Chan School of Public Health, was among experts who said that a lack of clear data on the virus and vaccines makes it hard to determine the possibility of reaching herd immunity, which could occur if enough people are vaccinated or otherwise immune to the virus.

Coronavirus: what variants were detected in Argentina and how much more contagious

Claudia Perandones, the scientific director of ANLIS-Malbrán, recently explained to Clarín, the mutation rate of the influenza virus is between 15 and 20 times higher than that of SARS-CoV-2. Mutations occur when the virus replicates. In that copy that you make, errors occur. Covid-19 has a mechanism that "detects" these errors, with which it mutates much less than that of influenza. But they do occur anyway.

Monday update: Mass. vaccines up, COVID cases also grow

IRCEP Scientific Advisor Dr. Marc Lipsitch said 411 cases of the B.1.1.7 variant had been detected in Massachusetts as of Sunday. The variant seems to be more contagious, he said, meaning that control measures that have been in use over the past year "may not be as effective to contain this new form of the virus."

What We Know About COVID-19 Vaccines And Pregnancy

IRCEP Scientific Advisor Dr. Sonja Rasmussen, with the University of Florida College of Medicine, says what little we do know about the safety and efficacy of COVId-19 vaccines in pregnant individuals is promising.

How did the UK variant come about and why is it more contagious?

“These mutations give the virus a much more important replication kinetics. Today it is known that three hours after the entry of the virus into the human cell, the number of copies equal to that between 24 and 48 in the variant that was circulating at that time. Its replication dynamics is extremely faster and if you have a higher viral load, you will spread more”, explained geneticist Dr. Claudia Perandones.

Health expert reflects on COVID response and projects hope

IRCEP Scientific Advisor Dr. Marc Lipsitch, a professor of epidemiology at Harvard, reflects on predictions he made a year ago about the pandemic and says there's reason to be hopeful in the months ahead.

Argentina, first Latin American with equipment that detects variants of covid

"With the current situation of the pandemic and the advent of variants, it is increasingly necessary to be able to sequence the largest number of positive individuals in the population," says Claudia Perandones, technical scientific director of the Anlis Malbrán Institute.

COVID Vaccines May Prevent Spread but Inoculated People Should Still Be Careful

IRCEP Scientific Advisor Dr. Marc Lipsitch, a professor of epidemiology at the Harvard T.H. Chan School of Public Health, told Newsweek that he suspects the reduction may be "considerably larger" with two doses, further out in time.

Do Covid-19 vaccines stop coronavirus transmission? Here's what research says

IRCEP Scientific Advisor Dr. Marc Lipsitch and Rebecca Kahn, both of whom are epidemiologists at the Harvard School of Public Health, in a preprint study estimated from the same data that "one dose of vaccine reduces the potential for transmission by at least 61%, possibly considerably more."

Without Official Vaccine Guidance, Pregnant People Are Left to Do Their Own Research

Dr. Kjersti Aagaard, a maternal fetal medicine specialist at Texas Children’s Pavilion for Women in Houston and professor and vice chair of research at Baylor College of Medicine, says she doesn’t hesitate to recommend the vaccine to her patients: “I believe pregnant women will benefit from being vaccinated, and that is a perfectly reasonable assessment given all the evidence to date.”

The growing evidence that the Covid-19 vaccines can reduce transmission, explained

IRCEP Scientific Advisor Dr. Marc Lipsitch, said, “I have been very cautious due to limited evidence on transmission effects but agree with [Grabowski and Lessler] that a large transmission effect is the best explanation of the limited evidence to date.”

Is Connecticut's strict age-based vaccine distribution plan fair?

IRCEP Scientific Advisor Dr. Sonja A. Rasmussen said that figuring out the best priority order for vaccines will be a short-term issue, as the number of vaccine doses is expected to rise exponentially by late April. But the question of vaccine hesitancy may then become a greater challenge.

The latest on the coronavirus

IRCEP Scientific Advisor Dr. Marc Lipsitch, professor of epidemiology and director of the Center for Communicable Disease Dynamics, served on a panel of experts discussing whether cross-border health measures such as flight bans, entry bans, compulsory quarantine and virus testing, and international vaccination passports can keep COVID-19 in check.

Should the US start prioritizing first vaccine doses to beat the variants?

“When you have larger viral populations and higher growth rates of viral populations, you have faster evolutionary change,” says Marc Lipsitch, an epidemiologist at the Harvard T.H. Chan School of Public Health and co-author on the paper. “The best way to reduce variant spread and adaptive evolution by the virus in general is to chop down its population as much as possible.”

The Case for Covid Optimism

“Very, very high case numbers are not a good thing, even if the trend is downward,” Dr. Marc Lipsitch, a Harvard epidemiologist, told The Times. “Taking the first hint of a downward trend as a reason to reopen is how you get to even higher numbers.”

Pfizer COVID-19 vaccine works well outside of clinical trials, study finds

“In all studies of vaccine effectiveness, a major challenge is to ensure that those we are comparing to identify the vaccine’s effect are similar in the other characteristics that may predict whether they get infected or ill,” said Dr. Marc Lipsitch, professor of epidemiology, director of the Center for Communicable Disease Dynamics.

Covid vaccines block disease, but do they stop infection?

"If the true impact on infections was very high, it would be great news because that is what we need for herd immunity," Dr. Marc Lipsitch, director of the Center for Communicable Disease Dynamics at the Harvard T.H. Chan School of Public Health, told AFP.

First Scientific Study of Real-World COVID-19 Vaccine Effectiveness – Here Are the Results

IRCEP Scientific Advisor Dr. Marc Lipsitch, said, “In all studies of vaccine effectiveness, a major challenge is to ensure that those we are comparing to identify the vaccine’s effect are similar in the other characteristics that may predict whether they get infected or ill. This is especially hard in the context of a rapidly growing, age-targeted vaccine campaign. Clalit’s extraordinary database made it possible to design a study that addressed these challenges in a way that provides tremendous confidence in the inferences that come out of the study.”

COVID-19 Vaccines Work. Here’s the Real-World Proof

In a study published Feb. 24 in the New England Journal of Medicine, researchers in Israel and the U.S. report that the vaccine made by Pfizer-BioNTech was highly effective in protecting against infection with the COVID-19 virus, lowering people’s chances of getting sick with the disease—especially severe disease—and dropping COVID-19 hospitalization rates. The data, says Dr. Marc Lipsitch, professor of epidemiology at the Harvard T. H. Chan School of Public Health and co-author of the paper, are “close to the best possible news.”

Can covid herd immunity be reached without vaccinating kids? It’s complicated

IRCEP Scientific Advisor Dr. Marc Lipsitch said the herd immunity threshold refers to the level of herd immunity needed so that when people return to their normal pre-covid lives, transmission of the virus cannot be sustained. That does not mean that the virus will completely disappear, but it will spread only among certain individuals rather than among the community at large, preventing new outbreaks.

Is It OK to Travel to Get the Covid-19 Vaccine?

In the meantime, until states receive more doses of vaccine to distribute, there are other ways to help make the process more equitable, According to Dr. Sonja Rasmussen. This includes “everything from making the computer scheduling system easier, to having more sites — including in disadvantaged neighborhoods — to having more vaccinators,”

Up to 70% more transmissible but sensitive to vaccines: what the British variant looks like

Claudia Perandones, scientific-technical director of the Malbrán Institute, explains that the results of the report released on the UK variant (B.1.1.7) are "preliminary" since they are based on a partial sequencing strategy (that is, only part of the genetic information of the virus is being analyzed). In this sense, she assures that to have conclusive elements it would be necessary to await the sequencing of the complete genome.

Coronavirus in Argentina: confirmed a case of community transmission of the English variant

IRCEP Scientific Advisor Dr. Claudia Perandones, technical scientific director of ANLIS Malbrán, confirmed the greater contagion capacity of the strain although she pointed out that "it does not aggravate the clinical picture of the disease, and that is very reassuring."

Don’t hate the vaccine tourists, hate the vaccine game

“There is no easy fix that I see, and it is hard to blame those who are entitled to get a vaccine in their own state but can’t access it for trying elsewhere,” Dr. Marc Lipsitch, a professor of epidemiology at the Harvard T.H. Chan School of Public Health, wrote in an email.

5 things parents should know about the COVID-19 vaccine and kids

IRCEP Scientific Advisor Dr. Kjersti Aagaard, Professor & Vice-Chair of Research, Department of Obstetrics & Gynecology, Division of Maternal-Fetal Medicine, Baylor College of Medicine and Texas Children’s Hospital, says one big concern for parents is about vaccines during pregnancy. “There is no biological reason whatsoever why a pregnant woman or her developing fetus would be anticipated to suffer any long-term outcome.”

What We Do And Don't Know About Pregnant Women And The COVID-19 Vaccine

Pregnant women are receiving conflicting information about whether they should get vaccinated, and it's raising a lot of questions and sowing anxiety. Host Tonya Mosley talks with maternal-fetal expert Kjersti Aagaard about what expectant mothers and families need to know.

Criticism Mounting over WHO Team's Findings in Wuhan

According to the Washington Post, Dr. Marc Lipsitch, a professor of epidemiology at Harvard's T.H. Chan School of Public Health, stressed that simply stating that the WIV has really good safety protocols alone does not put his mind at rest.

Director of Malbrán highlighted that new equipment allows exhaustive monitoring of coronavirus strains

The technical scientific director of the Anlis-Malbrán Institute, Dr. Claudia Perandones, highlighted today that the new high-tech equipment acquired by Argentina can monitor more than 3,000 samples every 24 hours of the coronavirus variants which allows us to monitor very intense and very detailed of all the variants that circulate in our country.

What If We Never Reach Herd Immunity?

IRCEP Scientific Advisor Dr. Marc Lipsitch, at Harvard, notes that severe illness and death from COVID-19 and its associated syndrome MIS-C in kids is still high enough on the order of the flu to justify vaccinating children rather than letting natural infections take their course. And even if vaccine protection against transmission is imperfect, including kids in the vaccinated pool will help dampen transmission in the larger community.

Argentina detects cases of two Brazilian variants of COVID-19

In conversation with Infobae, the scientific-technical director of the Malbrán institute, Claudia Perandones, assured that "when a pandemic such as COVID-19 occurs, knowing the genome of the responsible infectious agent provides highly relevant information for researchers."

The battle over schools reopening heats up. What are the facts?

"There's a lot of science suggesting that many schools can open up safely," Harvard University epidemiology professor Dr. Marc Lipsitch said, before noting that some are in better position than others.

What If Herd Immunity Is Out of Reach?

In December, IRCEP Scientific Advisor Dr. Marc Lipsitch estimated that the current bundle of vaccines would likely prove between 50 and 70 percent effective against transmission.

Argentina bought a machine for 1 million dollars to control the virus mutation

Dr. Claudia Perandones, scientific director of Anlis-Malbrán, explained to Clarín that "in addition to sequencing the Covid genome, the NovaSeq can diagnose it." That is, it determines if the sample is positive and also the variant to which it belongs.

Covid-19 Mutations Make Immunity Math Incredibly Daunting

On the basis of partial data available on the Oxford-AstraZeneca and Moderna vaccines and his experience with other diseases, epidemiologist Marc Lipsitch, director of the Center for Communicable Disease Dynamics at Harvard’s T.H. Chan School of Public Health, estimated in December that they’re likely to be 50% to 70% effective against transmission.

Pregnant Women With COVID-19 Can Transfer Antibodies To Their Baby

IRCEP Scientific Advisor Dr. Kjersti Aagaard, professor of obstetrics and gynecology at Baylor College of Medicine says the study provides solid evidence of maternal-fetal immune-communication during pregnancy. The process is designed to protect the child from infections as it transitions from life inside the womb to outside the womb, and it appears protections from COVID are no exception.

Vaccine News Gives Hope for Spring, if Enough People Get the Shots

“I think in the rich world, we have a lot to feel good about for vaccines, but globally, it’s a different story,” said Dr. Marc Lipsitch, professor of epidemiology and director of the Center for Communicable Disease Dynamics at Harvard T.H. Chan School of Public Health.

Experts split on delaying Covid-19 vaccine second doses. Here’s why

IRCEP Scientific Advisor Dr. Marc Lipsitch of Harvard University is in favor of spreading out vaccine doses in a larger population rather than doubling doses for half of that population. “If you can get at least half the benefit, then it’s better to spread it out,” he said.

Why COVID Vaccines Are Likely Safe for Pregnant People

IRCEP Scientific Advisor Dr. Sonja A. Rasmussen notes that it is still not clear if the increased risk to severe disease during pregnancy is related to an altered immune system or to other changes typical of the state, such as occasional breathing difficulty.

Experts tout delaying 2nd COVID vaccine dose as US deaths mount

IRCEP Scientific Advisor DR. Marc Lipsitch said the emergence of variant strains adds urgency to the dose-delaying question. Data from both Pfizer and Moderna show those vaccines are effective in protecting against the highly contagious B117 variant first identified in England, and at least somewhat protective against infections caused by variants that were first identified in Brazil and South Africa.

Experts tout delaying 2nd COVID vaccine dose as US deaths mount

IRCEP Scientific Advisor DR. Marc Lipsitch said the emergence of variant strains adds urgency to the dose-delaying question. Data from both Pfizer and Moderna show those vaccines are effective in protecting against the highly contagious B117 variant first identified in England, and at least somewhat protective against infections caused by variants that were first identified in Brazil and South Africa.

New clinical trials raise concerns that the coronavirus is learning how to resist vaccines

IRCEP Scientific Advisor DR. Marc Lipsitch, a Harvard epidemiologist says that other parts of the immune system, such as T-cells, might play a role in fighting a variant, even when neutralizing antibodies fall short.

Pregnant women should get Covid-19 vaccine, US doctors say, despite conflicting international advice

According to IRCEP Scientific Advisor Dr. Kjersti Aagaard, the absence of data is not equivalent to risk of harm — especially when the science and basic biology does not suggest a plausible reason why harm could occur.

WHO advises pregnant women to avoid COVID vaccine, but others say the choice is theirs to make

IRCEP Scientific Advisor Dr. Kjersti Aagaard says it’s important to note that WHO issued the same recommendation for Pfizer earlier this month. Aagaard also said that while pregnant women were not enrolled in the vaccine trials, there were women who became pregnant during that time.

New COVID-19 Variants Threaten Increased Transmissibility

IRCEP Scientific Advisor Dr. Marc Lipsitch, an epidemiologist from Harvard’s Medical School suggests that even though countries should not overreact, “it’s a big deal for a world that’s already stretched trying to keep in control the old variant.”

‘We’ve Let The Worst Happen’: Reflecting On 400,000 Dead

Epidemiologist Marc Lipsitch at the Harvard T.H. Chan School of Public Health has argued that contact tracers should prioritize any case that involves a B.1.1.7 variant, because those cases will spread faster.

Your kid might not return to a classroom this year. Are teachers unions to blame?

IRCEP Scientific Advisor Dr. Marc Lipsitch, professor of epidemiology at Harvard University and director of the Center for Communicable Disease Dynamics, said the thinking has shifted toward reopening schools because of new data showing younger grades are not typically the main source of transmission, at least when significant control measures are in place.

New strains of Covid-19: what are they and how do they affect the development of the disease

"Variants are a set or a constellation of mutations or changes in the virus genome that occur jointly or in association. The variants that cause concern are called VOCs (variants of concern, in English)”, explains Dr. Claudia Perandones, a renowned geneticist who coordinates the ANLIS Malbrán teams.

IRCEP Scientific Advisor Dr. Claudia Perandones explains that most of the vaccines for SARS CoV 2 were developed using genetic engineering strategies. This made it possible to speed up the times but would also allow, if necessary, to introduce modifications in the genomic sequences of the viral spike, which is the target that all choose as the main immune stimulus for the body to produce antibodies. Thus, the race against the “little mutants” would never start from 0.

Biden under pressure to deliver more COVID-19 shots

IRCEP Scientific Advisor Dr. Marc Lipsitch said the clock is ticking. “They emphasize the real need to continue accelerating the rollout as much as possible. Because to some degree it's a race between a more contagious virus and our ability to protect people.”

Is it time to ditch your cloth mask—and replace it with something better?

According to IRCEP Scientific Advisor Dr. Marc Lipsitch, a variant that much more contagious is concerning. He noted, for example, that if the variant is 50% more contagious than the unmutated coronavirus, "in less than two weeks, you get twice the number of cases. … And in a month or so, you have four, five times as many cases. But that's very approximate."

Florida limits coronavirus vaccines to permanent, seasonal residents

IRCEP Scientific Advisor Dr. Sonja Rasmussen, a professor of epidemiology at the University of Florida, said the state shouldn’t be thinking about geography when it comes to vaccines, but about getting shots to as many people as possible, although she doesn’t like the idea of so-called “vaccine tourism.”

Everything You Need To Know About Breastfeeding & The COVID Vaccine

IRCEP Scientific Advisor Dr. Kjersti Aagaard said “Because it is not a live virus, there is no virus to transmit with nursing. Although about four in 100 people had a fever with the first dose of the vaccine in the trial, and 16 in 100 after the second dose in the trial, this did not mean that they became infected. These are anticipated responses to the vaccine, and clues that it is arming your immune system to fight the virus should you become infected.”

What is it and why does the WHO warn about its harmfulness

The scientific technical director of the ANLIS Malbrán, Dr. Claudia Perandones, explained that the UK variant, named B.1.1.7, has 23 mutations, of which 8 are in the viral spicule, also called spike protein, and the rest in other regions of the viral genome.

More than 40,000 Floridians overdue for second coronavirus shots

IRCEP Scientific Advisor Dr. Sonja Rasmussen, a professor at the University of Florida’s College of Medicine and College of Public Health and Health Professions, said it’s likely that many of the Floridians getting access to vaccines this early in the process are motivated to want to get both doses, and that it may become more difficult later in the process to ensure people are coming back for round two.

ANALYSIS: Data shows thousands of Floridians overdue for 2nd dose of COVID-19 vaccine

IRCEP Scientific Advisor Dr. Sonja A. Rasmussen says some people who’ve missed their second dose windows could be intentionally putting it off because doctors warn there may be additional side effects.

Charts Explaining Why Epidemiologists Are So Concerned About New COVID-19 Variants

IRCEP Scientific Advisor Dr. Claudia Perandones stated “One of the best ways to learn about an organism is to sequence its genome, which contains the necessary instructions to make it work. When a pandemic such as COVID-19 occurs, knowing the genome of the responsible infectious agent provides information of great relevance to researchers. It allows them to identify what causes the disease, to know its origin and evolution over time, or to develop therapeutic strategies to deal with it.”

They assure that the British variant "does not aggravate the clinical picture"

IRCEP Scientific Advisor Dr. Claudia Perandones explained that the variant of the SARS CoV2 virus from the United Kingdom, which this Saturday was reported to have been detected in an Argentine who entered the country, although it showed greater transmissibility, "the tests carried out in Together with a team from New York they showed that it does not aggravate the clinical picture of the disease, and that is very reassuring."

K-12 education appears on downward slide as pandemic continues

Harvard Chan School Professor of Epidemiology Marc Lipsitch, who appeared at the event with Levinson Tuesday morning, said that early in the pandemic, public health officials were forced to make decisions with incomplete information about the virus’ impact on children and their role in transmitting the virus.

The COVID-19 Vaccine and Pregnancy, Two Experts Provide Guidance line

IRCEP Scientific Advisor Dr. Kjersti Aagaard said “the decision to receive the COVID-19 vaccine should be made with your provider (physician or midwife for pregnant women) about not only the vaccines risks and benefits, but your risk of getting moderate or severe disease if you were to remain unvaccinated and get infected with the virus.”

Many Massachusetts schools plan to reopen, but teachers among last in vaccine line

Dr. Marc Lipsitch, epidemiology professor at the Harvard T.H. Chan School of Public Health and member of the state’s COVID-19 Vaccine Advisory Group, said the current positioning for teachers is appropriate. If all goes well … that should be in time for next school year. I think it’s hard to imagine getting a large amount of vaccine uptake in time to rescue much of this school year even if teachers were put at the very top.

The future of the coronavirus? An annoying childhood infection

IRCEP Scientific Advisor Dr. Marc Lipsitch said that other coronavirus infections may or may not be applicable, because we haven’t seen what those coronaviruses can do to an older, naive person.

Scientists Warn Future Coronavirus Mutations Could Evade Vaccines and Treatments

“Because B-117 can grow exponentially even in communities that are keeping SARS-CoV-2 under control, the situation is extremely urgent,” writes Harvard epidemiologist Marc Lipsitch, PhD, and a colleague in an analysis on Statnews. “If we want vaccination to win this new race, we have to slow down the new virus while it’s still rare.”

The Health 202: Recovered coronavirus patients should still get the vaccine, experts say

“If I were over 70 or otherwise ill, I would certainly take the vaccine even if I'd had [covid-19]. If I were 30 and healthy, I should not be getting it now (unless a health care worker), but if for some reason I did get offered it I would probably decline,” Dr. Marc Lipsitch, an infectious-disease specialist at the Harvard T.H. Chan School of Public Health, said in an email.

New evidence that U.K. coronavirus variant spreads more easily has scientists really worried

IRCEP Scientific Advisor Dr. Marc Lipsitch said that in a country already struggling to get people to wear masks, stay home and avoid gatherings, vaccines are looking like the only way out. And the arrival of B.1.1.7 makes a stronger-than-ever case for prioritizing the elderly and those most likely to become severely ill or die from an infection.

We lost to SARS-CoV-2 in 2020. We can defeat B-117 in 2021

In an editorial in Stat News, Harvard epidemiologist Dr. Marc Lipsitch and MIT professor Kevin Esvelt wrote that this time around “we are better prepared for this new enemy” and argued that the US should aim its countermeasures at suppressing the new strain.

An Extra-Contagious Coronavirus Variant Is In The US — But No One Knows How Widespread It Is

IRCEP Scientific Advisor Dr. Marc Lipsitch, an epidemiologist at the Harvard T.H. Chan School of Public Health, called the new variant “a really big deal” and the country’s lack of genomic surveillance “a huge failing of our public health system.”

Biden's Plan To Release More Vaccine Is A Gamble. Is It Worth The Risk?

IRCEP Scientific Advisor Dr. Marc Lipsitch, a professor of epidemiology at the Harvard T.H. Chan School of Public Health, agrees that this is a good move. He says it's become even more urgent to get as many people vaccinated as fast as possible because of the emergence of new variants of the virus that appear to be more contagious.

Scientists are monitoring a coronavirus mutation that could affect the strength of vaccines

IRCEP Scientific Advisor Dr. Marc Lipsitch said the U.S. should focus its efforts on curtailing the variant, including by sequencing more samples from patients to identify cases and directing its contact tracing and quarantining campaigns to try to hem it in.

Coronavirus: what are the implications of the detected variant?

According to IRCEP Scientific Advisor Dr. Claudia Perandones, although the imported variant was only identified in a single case out of 186 reviewed, the figure could increase as the sample expands.

Highly infectious coronavirus variant dampens prospects for summer return to normal

IRCEP Scientific Advisor Dr. Marc Lipsitch, director of the Harvard T.H. Chan School of Public Health’s Center for Communicable Disease Dynamics, said though he had been skeptical that vaccination would quickly bring the pandemic under control, he had thought that the campaign’s progress, coupled with warmer weather bringing people outdoors, meant that relatively normal activities could resume by summer.

They assure that it is being evaluated if the new strain of coronavirus from Brazil is more contagious and lethal

In an interview on Jorge Lanata's program on Radio Miter, the Scientific and Technical Director of the Malbrán Institute, Claudia Perandones, spoke about the mutation of the virus that comes from the neighboring country.

Coronavirus: Claudia Perandones explained the characteristics of the 'Rio de Janeiro strain'

In this interview in Spanish, IRCEP Scientific Advisor Dr. Claudia Perandones explains the characteristics of the 'Rio de Janeiro strain'

New COVID ‘Super Strains’ Could Disrupt Life Again

IRCEP Scientific Advisor Dr. Marc Lipsitch believes contact tracing efforts in the U.S. which have been overwhelmed in many places by community spread of the virus should pivot to focus just on breaking the chains of transmission caused by the new variants.

Some States Put Residents 65 and Older Next in Line for COVID Vaccines

IRCEP Scientific Advisor Dr. Marc Lipsitch, an epidemiologist at the Harvard T.H. Chan School of Public Health, says that when deciding between first vaccinating older Americans or essential workers, “health policy should as a first pass try to minimize the number of lives lost. My best understanding of the data is that the most lives would be saved by getting vaccines to 65 and over.”

Coronavirus (COVID-19): Press Conference with Marc Lipsitch and Barry Bloom

In this press conference, IRCEP Scientific Advisor Dr. Marc Lipsitch discusses the topics about the new variant, vaccine distribution and the single versus multiple doses.

Harvard disease expert calls more contagious coronavirus variant a ‘really big deal’

As a new coronavirus variant forces the United Kingdom into another lockdown, Harvard disease expert Marc Lipsitch says it’s time for officials in the United States to focus on the exceptionally contagious mutation.

Frustration builds over slow pace of vaccine rollout

IRCEP Scientific Advisor Dr. Marc Lipsitch, an epidemiologist and professor at Harvard T.H. Chan School of Public Health, said the fact that only one-third of available vaccines have been administered so far is “not so great.”

In Absence of Data, Pregnant Women Push Forward With COVID-19 Vaccine

In a December commentary in JAMA Network Open, Drs. Denise Jamieson of Emory University and Sonja Rasmussen of the University of Florida responded to recent research that suggests pregnant women infected with COVID-19 during the third trimester are unlikely to pass the infection to their newborns, but also that a vaccine given to pregnant women may not protect their newborns from the disease. They additionally noted the potentially negative outcomes pregnant women may experience in connection with COVID-19.

Children get sick less often, but risk increases with age

Dr. Sonja A. Rasmussen and Dr. Lindsay Thompson said "Research has shown that children with certain underlying conditions are at increased risk of severe Covid-19, such as obesity, asthma, neurological disorders, heart or immune diseases, among others."

Alarming number of US health care workers are refusing COVID-19 vaccine

IRCEP Scientific Advisor Dr. Marc Lipsitch told the newspaper that a high percentage of vaccine refusal among not just health care workers, but the general population, could be problematic.

Moderna to offer COVID vaccine to placebo participants, sparking ethical debate

In a viewpoint article published in the Journal of the American Medical Association, authors including Harvard’s Dr. Marc Lipsitch wrote that vaccinating all the placebo participants, “would result in a major loss of valuable research data without eliminating undue risks to participants who continue in the placebo group of the trials.”

How is COVID-19 affecting children?

In a new report from JAMA Pediatrics, experts describe how the coronavirus is affecting children. Study co-authors Dr. Lindsay A. Thompson and Dr. Sonja A. Rasmussen also explains what parents can do to help keep their children safe as the pandemic persists.

Children and covid-19: how the infection affects the little ones

"The flu vaccine is recommended every year for all children older than 6 months, but it is even more important now to avoid contracting the two diseases," Sonja A. Rasmussen and Lindsay Thompson say. "As a safe and effective vaccine against COVID-19 becomes available, talk to your doctor about the possibility of getting you and your family vaccinated."

The keys to the new SARS-CoV-2 mutation, according to an expert from Malbrán

IRCEP Scientific Advisor Dr. Claudia Perandones, technical scientific director of the Malbrán Institute, told Infobae why the vaccines will be used for this new variant detected in the United Kingdom, and revealed the advantages of a state-of-the-art genomic sequencing equipment that the institute will use.

Can vaccines get us to COVID herd immunity? Experts say ‘The jury is definitely still out’

IRCEP Scientific Advisor Dr. Marc Lipsitch said, “Those numbers are useful for thought experiments, but they don’t represent what’s likely to be the way we control the virus or its impacts. Offering a kind of magic number requires some very strong assumptions about these vaccines.”

"The UK strain is not here, but we analyze each case"

IRCEP Scientific Advisor Dr. Clara Menéndez confirms, “At ANLIS-Malbrán we sequenced 135 Covid genomes and none of the mutations associated with the United Kingdom variant were observed in them. Nor to the one from South Africa or the one that appeared in Rio de Janeiro.”

The new strain of COVID-19: How you live in London days before the holidays

As published by Télam, the scientific-technical director of Anlis-Malbrán, Claudia Perandones, explained that the new variant of the virus will not affect the vaccine and that it is expected "they will not condition important changes in the effectiveness of the different vaccine formulas that are in progress".

No mom-to-baby virus spread noted in late-pregnancy COVID-19

The COVID-positive pregnant women had illnesses ranging in severity from asymptomatic to critical. The researchers compared them to 63 pregnant women without COVID infections and 11 nonpregnant women of reproductive age hospitalized for COVID. As Sonja A. Rasmussen, MD, MS, and Denise J. Jamieson, MD, MPH, wrote in a commentary, these three groups allow for comparisons between transplacental antibody transfer, placental pathology, and viral load antibody response in pregnancy.

Should people who have had Covid-19 wait to get a vaccine?

Along with possible logistical issues, there would be serious equity considerations, said Marc Lipsitch, an epidemiologist and director of the Center for Communicable Disease Dynamics at the Harvard T.H. Chan School of Public Health, who co-wrote the CU Boulder study.

Questions and answers about the new strain of coronavirus: from whether the vaccine works to how it impacts infections

I this interview, IRCEP Scientific Advisor Dr. Claudia Perandones explains that this variant of COVID has been circulating since September and that for now it has not been detected in the country.

Locking down, or keeping the economy open? A comparison of two covid-19 strategies

IRCEP Scientific Advisor Dr.Marc Lipsitch, an epidemiologist at the Harvard T.H. Chan School of Public Health, tweeted in September. “Herd immunity is not a strategy or a solution. It is surrender to a preventable virus.”

Christmas during COVID-19: Don't hug, avoid indoor gatherings, say experts amid fear of surge in cases

Epidemiologist Marc Lipsitch of Harvard University said for indoor gatherings, ventilation is of paramount importance. A Sage report echoes that infection risk can be four times greater without proper ventilation.

Should skin color decide who gets the vaccine first?

IRCEP Scientific Advisor Dr. Marc Lipsitch, an infectious-disease epidemiologist at Harvard’s T.H. Chan School of Public Health, argued that teachers should not be included as essential workers if a central goal of the committee is to reduce health inequities.

Massachusetts Scales Up Contact Tracing, But Some Experts Question Its Value

IRCEP Scientific Advisor Dr. Marc Lipsitch said, “Contact tracing works well when you have relatively few cases, so you have the resources to do it, and when you have even fewer cases that are unknown, so testing capacity is high relative to the case burden. Neither of those is true.”

The Covid-19 vaccines are a marvel of science. Here’s how we can make the best use of them

IRCEP Scientific Advisor Dr.Marc Lipsitch, an infectious diseases epidemiologist at Harvard’s T.H. Chan School of Public Health, agreed, saying vaccines that at least prevent infections in the elderly from turning into life-threatening illnesses would make a major difference.

These 2 Places Could Be Closing Soon, White House Official Warns

In a supplementary opinion piece also published in Nature, Marc Lipsitch, PhD, and Kevin C. Ma from the Harvard T.H. Chan School of Public Health wrote that "case studies of clusters of infections in locations such as those for indoor choir practice…demonstrate the high risks of poorly ventilated, crowded spaces."

More Stringent Testing is Needed as Regions Head for More Lockdowns

IRCEP Scientific Advisor Dr.Marc Lipsitch, a Professor of Epidemiology at the Harvard T.H. Chan School of Public Health, said"If we really wanted to get things under control, frequent testing of almost everybody would be one way to do it and we're, of course, nowhere near that. We're doing infrequent testing of almost no one."

Pregnant women haven’t been included in promising COVID-19 vaccine trials

IRCEP Scientific Advisor Dr. Sonja A. Rasmussen said, “We need data collected in a systematic way to guide pregnant women and their health care providers regarding whether they should get a COVID-19 vaccine.”

U.S. failed to control pandemic, but vaccination provides ‘chance to get next phase right’

While much has been made of the potential problem of vaccine reluctance, Dr. MarkLipsitch said he thinks it may not be as high a hurdle as some surveys have shown. People may answer a hypothetical question one way but behave differently when friends and neighbors are getting vaccinated and resuming a semblance of normal behavior.

Should researchers shelve plans to deliberately infect people with the coronavirus?

IRCEP Scientific Advisor Dr. Marc Lipsitch said, “It’s hard to use large-scale field trials to figure out whether a vaccinated person still sheds the virus. It’s almost prohibitively expensive because in a 30,000-person trial you have to test 30,000 people a week for a long period of time.”

Pfizer and Moderna vaccines showing potential success of mRNA platform – a first

IRCEP Scientific Advisor Dr. Marc Lipsitch, professor of epidemiology at the Chan school said most rare serious adverse reactions will happen within two months of vaccination, which is why companies have committed to holding off on submitting data to the Food and Drug administration until after two months.

Harvard Researchers: Nearly Half of Young Adults Showing Signs of Depression Amid Pandemic

In a debate with pro-lockdown Harvard epidemiologist, Marc Lipsitch, Dr. Bhattacharya acknowledged that COVID-19 “is an absolutely deadly disease for people who are older and for people who have certain chronic conditions.” He explained that there is a 95 percent COVID-19 survival rate for people 70 and older, while for people who are under 70, there is currently a 99.95 percent survival rate.

As covid-19 surges, the big unknown is where people are getting infected

IRCEP Scientific Advisor Dr. Marc Lipsitch, an epidemiologist from Harvard T.H. Chan School of Public Health, points to government data in several countries showing most people are becoming infected at home. The home, while undoubtedly a driver of infections, probably tops the list, he said, because of how hard it is to trace infections that originate elsewhere.

Why experts say we need to stop talking about herd immunity

IRCEP Scientific Advisor Dr. Marc Lipsitch, a professor of epidemiology at the Harvard T.H. Chan School of Public Health, said Friday in a podcast discussion about herd immunity hosted by the Journal of the American Medical Association, “Everyone agrees that we should do everything in our power to protect the vulnerable, but it is scientifically clear that right now in the United States and in most other places, if not all, we do not have the tools to protect the vulnerable without controlling transmission in society at large.”

Restaurants, Gyms, Hotels Carry Highest COVID Superspreader Risk: Study

In a concurrent opinion piece published in Nature, Marc Lipsitch and Kevin Ma at the Harvard T.H. Chan of School Public Health, wrote that there is limited epidemiological data on how interventions curb infection. Such models, they said, can act as a starting point to guide policy decisions about reopening.

Pfizer’s Covid-19 Vaccine Results Look Exciting—But Come With Big Warnings

IRCEP Scientific Advisor Dr. Marc Lipsitch, director of Harvard Chan’s Center for Communicable Disease Dynamics, echoed cautions, stating “I also think that continuing the trial to observe long-term efficacy and safety, and get more outcomes so that subgroups can be evaluated, is critical for this vaccine."

Is Florida a test case for coronavirus herd immunity? Experts warn it’s deadly

IRCEP Scientific Advisor Dr. Marc Lipsitch, professor of epidemiology at Harvard T. H. Chan School of Public Health, said "There just is no evidence whatsoever that we know how to effectively protect the most vulnerable."

Pregnant women can develop a more serious coronavirus infection

IRCEP Scientific Advisor Dr. Clara Menéndez points out, “There are several hypotheses. The immune system of a pregnant woman undergoes changes so as not to reject the fetus as a foreign body. It adapts. It is not that the woman is immunosuppressed, but there may be immunological changes that influence a greater inflammatory response to covid-19.”

Pregnant women are at higher risk of developing complications from covid-19

IRCEP Scientific Advisor Dr. Clara Menéndez, director of the Maternal, Infant and Reproductive Health Initiative of the ISGlobal research center warns pregnant women that they have to be aware that they are a risk group for COVID-19.

Coronavirus in Argentina: Malbrán's scientific-technical director tells the news about vaccines, tests and the evolution of the pandemic in the country

IRCEP Scientific Advisor Dr. Claudia Perandones says, “When the pandemic started, we thought it was going to be like the 2009 influenza pandemic. At that time, 23 thousand samples were processed and it already seemed crazy to us. In the central estate (CABA), we are reaching 100,000.”

We Asked Five Experts for COVID Thanksgiving Advice

IRCEP Scientific Advisor Dr. Marc Lipsitch suggests, try to eat outside before the weather turns too bitingly cold, and keep your guest list small.

Who should get the 1st COVID-19 vaccines?

According to IRCEP Scientific Advisor Dr. Marc Lipsitch, the optimum vaccination strategy will depend on the specific vaccine characteristics as revealed by testing of the vaccines.

Herd immunity strategy fits

IRCEP Scientific Advisor Dr. Marc Lipsitch, director of the Center for Communicable Disease Dynamics at the Harvard T.H. Chan School of Public Health, admonishingly labeled the idea as "policy-based evidence-making rather than evidence-based policymaking."

UF Health physician part of national COVID vaccine panel

IRCEP Scientific Advisor Dr. Sonja A. Rasmussen said, “We tried, with everything, to be thinking (about our goal), and our goal was to reduce severe morbidity and mortality due to transmission and reduce societal impact.”

Coronavirus (COVID-19): Press Conference with Marc Lipsitch, 10/19/20

In this press conference, IRCEP Scientific Advisor Dr. Marc Lipsitch answers some questions related to COVID-19.

CDC Reduces Consecutive Minutes Of COVID-19 Exposure Needed To Be A 'Close Contact'

Epidemiologist Marc Lipsitch of the Harvard T.H. Chan School of Public Health told NPR in an email that the new definition "captures most of the instances where there would be transmission but doesn't vastly expand the number."

Herd Immunity or Social Distancing? A Combination, Actually

IRCEP Scientific Advisor Dr. Marc Lipsitch, who has signed the Snow petition, said in a press conference this week that the big objection to the herd immunity strategy is that nobody has figured out how to protect the vulnerable.

UK researchers to deliberately infect participants with COVID-19 for vaccine trial

“Controlled human challenge trials of SARS-CoV-2 vaccine candidates could accelerate the testing and potential rollout of efficacious vaccines,” wrote Dr. Marc Lipsitch of the Harvard T.H. Chan School of Public Health in a June article published in the Journal of Infectious Diseases.

Covid-19 testing lags as cases increase across the United States

IRCEP Scientific Advisor Dr. Marc Lipsitch said, “If we really wanted to get things under control, frequent testing of almost everybody would be one way to do it and we’re, of course, nowhere near that.”

Study: COVID-19 antibodies wane after five months

IRCEP Scientific Advisor Dr. Marc Lipsitch said, “I wouldn’t say that loss of neutralizing antibodies means those people are all ready to be re-infected. Whether someone who once had neutralizing antibodies and no longer does has totally lost protection -- it’s unlikely that they’ve totally lost protection. But also it’s possible they’ve lost some of their protection.”

Preparing the campus to prevent a COVID-flu “twindemic”

IRCEP Scientific Advisor Dr. Marc Lipsitch, a Harvard University epidemiologist, summed up the concerns in a recent Scientific American article: “The worst-case scenario is both [the coronavirus and the flu] are spreading fast and causing severe disease, complicating diagnoses and presenting a double burden on the health care system.”

For Joe Biden, two face masks are better than one in the era of COVID-19

IRCEP Scientific Advisor Dr. Sonja A. Rasmussen wrote in an email to USA TODAY, "It can serve as an outer barrier and extend its use by serving as a physical barrier to potentially infectious liquids and droplets."

Here’s everything you need to know about the fall COVID-19 surge, according to experts

IRCEP Scientific Advisor Dr. Marc Lipsitch said it’s important to remember that we are the only ones who can stop this, by listening to the experts and taking the proper precautions. Case numbers can still go back down so long as people don’t give up on social distancing.

Trump insists he’s free of coronavirus, ready for campaign trail

IRCEP Scientific Advisor Dr. Marc Lipsitch, an infectious disease expert at the Harvard School of Public Health, said the doctor’s letter does not provide enough information to be assured that Trump is no longer infectious to others. He noted that Trump’s use of steroids could prolong viral shedding so the CDC’s 10-day standard may or may not apply.

Is it safer to fly or drive during the pandemic? Health experts weigh in

IRCEP Scientific Advisor Dr. Marc Lipsitch, the director of Harvard's Center for Communicable Disease Dynamics, said there is some evidence that coronavirus transmission can happen on an airplane. For road trips, he noted that there are different safety considerations to keep in mind depending on how you are taking them.

COVID-19 and cars: Not a good medical mix, as it can harm drivers and passengers

Any person known to have or suspected of having COVID-19 should "isolate themselves at home except if he or she needs to get medical care," said Sonja A. Rasmussen, a professor of pediatrics and epidemiology at the University of Florida College of Medicine and College of Public Health and Health Professions.

Covid-19 in Argentina: 197 deaths and 11,129 new cases in the last 24 hours

IRCEP Scientific Advisor Dr. Claudia Perandones affirmed that the application of a new sanitizer in transport, which has already started in trains, and the rapid tests for the detection of the coronavirus will allow “progressive openings.”

The Hindu Explains | What does herd immunity mean for COVID-19?

IRCEP Scientific Advisor Dr. Marc Lipsitch, Professor of Epidemiology and director, Center for Communicable Disease Dynamics, Harvard School of Public Health, responding on Twitter to the news of the White House’s new pandemic adviser recommending ‘herd immunity’, said: “This is simply wrong … Herd immunity is not a strategy or a solution. It is surrender to a preventable virus.”

Expert panel recommends U.S. join international vaccine pool, contribute vaccine to low-income nations

IRCEP Scientific Advisor Dr. Marc Lipsitch, an epidemiologist at Harvard’s T.H. Chan School of Public Health, said he had no criticisms of the report’s prioritization plans. “It is clearly a thoughtful document that has considered and integrated many kinds of evidence to make a rational and humane set of recommendations in a very short time, based on the best evidence available.”

200,000 COVID dead as Trump vilifies science, prioritizes politics

IRCEP Scientific Advisor Dr. Sonja A. Rasmussen said, “I’m sure this won’t be easy, but it’s essential to CDC’s reputation. We need a strong and trusted CDC to get ourselves through this pandemic — as well as through the next public health emergency after this one.”

40.3 percent of those in Spain refuse to be vaccinated immedaiately

IRCEP Scientific Advisor Dr. Marc Lipsitch, an epidemiologist at Harvard, said, “I hope that the combination of better treatments, the first vaccines and a better understanding of the transmission mechanisms will make 2021 better than 2020. But I would be very astonished if much of the planet managed to leave behind social distancing and travel restrictions. The middle of next year.”

Tribal Truce — How Can We Bridge the Partisan Divide and Conquer Covid?

Beyond the near complete failure of U.S. federal leadership in combating the pandemic, one significant problem, according to Harvard epidemiologist Marc Lipsitch, has been the absence of consistent communication from nonpartisan experts.

Summer is over: Will winter bring a second wave of COVID-19?

IRCEP Scientific Advisor Dr. Marc Lipsitch, professor of epidemiology at the Harvard T.H. Chan School of Public Health told the American Medical Association "A second wave would be similar to what we experienced in the spring of 2020, but it could be harder to control in the fall, when people are tired of social distancing.”

Catching Up with Former CDC Pandemic Specialist Dr. Sonja Rasmussen

HPN sits down for another conversation with former CDC pandemic specialist Dr. Sonja Rasmussen to discuss the U.S. response to COVID-19 over the past six months.

What the Fall and Winter of the Pandemic Will Look Like

The Harvard epidemiologist Dr. Marc Lipsitch says his efforts to predict how many Covid-19 patients would need intensive care were stymied by a lack of basic information about their average hospital stay.

‘Challenge studies’: Should we be testing COVID vaccines by intentionally infecting volunteers?

Bioethicist Nir Eyal, PhD, and epidemiologists Marc Lipsitch, PhD, and Peter G. Smith, DSc, added perspective in an article in The Journal of Infectious Diseases. They compare the sacrifice of a challenge study participant to those of volunteer firefighters, participants in drug trials, members of the military, and living organ donors.

What Parents Should Know About Flu and COVID-19 Before Sending Their Kids Back to School

IRCEP Scientific Advisor Dr. Sonja A. Rasmussen said “We’ve all heard that COVID-19 is milder in kids than in adults, but that doesn’t mean that it can’t cause severe illness in some kids.”

“Do No Harm to Whom?” Challenge Trials & COVID-19

IRCEP Scientific Advisor Dr. Marc Lipsitch, Director of the Center for Communicable Disease Dynamics at the Harvard School of Public Health, began by comparing traditional phase 3 trials and challenge trials.

By the numbers: COVID-19 death toll higher than the flu

IRCEP Scientific Advisor Dr. Marc Lipsitch said patients presenting symptoms caused by the flu or respiratory syncytial virus (RSV) -- another dangerous seasonal illness -- could greatly increase the demand for coronavirus testing, overburdening labs and further delaying results.

Do you need a COVID-19 test if you plan to travel? Do you still need to quarantine? What to know about the confusing rules.

IRCEP Scientific Advisor Dr. Sonja Rasmussen, a University of Florida pediatrics professor, said the testing must be done quickly so those who are positive can be isolated and their contacts notified so they too can quarantine.

There is a higher risk of hospitalization in intensive care for COVID-19 in pregnant women

According toIRCEP Scientific Advisor Dr. Clara Menéndez, the observation of COVID-19 cases of pregnant women in Spain and in South American countries shows that they have a 2-6 times higher risk of being hit by infection in the intensive care unit than other women of fertile age.

Children May Be Silent Carriers of COVID-19

IRCEP Scientific Advisor Dr.Sonja A. Rasmussen explains that some children might carry the virus, but have mild symptoms or none at all, and could transmit the virus to their teacher, parents, and grandparents, who are at higher risk of severe disease.

Dr. Fauci dismissed herd immunity for COVID-19, said US tactic should be to prevent as many infections as possible

IRCEP Scientific Advisor Dr.Marc Lipsitch, an epidemiologist at the Harvard TH Chan School of Public Health, said on Twitter on Monday in response to the Post report. "Herd immunity is not a strategy or a solution. It is surrender to a preventable virus."

Review Suggests COVID-19 Paradox in Pregnancy

IRCEP Scientific Advisor Dr.KjerstiAagaardsaid that a living systematic review -- meaning it will be updated regularly -- is necessary to make clinical decisions about caring for this at-risk population based on the latest evidence.

When COVID-19 collides with flu season

IRCEP Scientific Advisor Dr.Marc Lipsitchsaid that this is going to be a very challenging flu season. The impact on poor and communities of color would be devastating. The need to try to rule out (COVID-19) will be intense.

U.S. Records 6 Million Coronavirus Cases

According to IRCEP Scientific Advisor Dr.Marc Lipsitch, there are other places in the world that have many fewer cases and more open economies and better control over the epidemic.

Knox County Schools will share COVID-19 dashboard but won't release data by school

IRCEP Scientific Advisor Dr. Marc Lipsitch, a professor of epidemiology and director of the Center for Communicable Disease Dynamics at Harvard T.H. Chan School of Public Health, told Knox News that knowing the number of cases in a school is only a first step. "The more people who are infected in a school — in truth, which is different from how many we know about — but the number of truly infected people in a school determines the level of risk of transmission within a school because each case is a potential source."

Coronavirus in Argentina. They study how long the virus persists in saliva to diagnose Covid-19

"In genetics, saliva samples are used a lot. But, in Covid-19, it was not known if they would be useful to detect the virus or not. The results were preliminary, in less than 100 health workers and a few patients," comments DR. Claudia Perandones, technical scientific director of ANLIS Malbrán. "The idea was to start studying it in May with a well-designed research protocol so that the results were robust."

Why people are volunteering to get Covid-19

IRCEP Scientific Advisor Dr. Marc Lipsitch said “If we could protect young, healthy people with a good vaccine, especially one that blocked transmission and infection, that would hugely help our ability to get back to normal because they would be out of the transmission loop and be able to work and be able to go to school and other things,”

WIn a polarized world, what does ‘follow the science’ mean?

IRCEP Scientific Advisor Dr. Marc Lipsitch said “One of the remarkable things about this pandemic is the extent to which many people in the scientific community are explicit about what’s uncertain. There has been a sort of hard core of scientists, even with different policy predispositions, who have been insistent on that.”

US coronavirus death projections in doubt as officials question China’s numbers

Marc Lipsitch, director of Harvard College’s Heart for Communicable Illness Dynamics, informed the Publish, “They contacted us, I feel, on a Tuesday every week in the past, and requested for solutions and suggestions by Thursday, principally 24 hours. My preliminary response was we are able to’t do it that quick. However we ended up offering them some numbers responding to very particular eventualities.”

Population immunity is slowing down the pandemic in parts of the US

“When the disease itself causes herd immunity, it does so more efficiently than when we give out vaccine at random,” Dr. Marc Lipsitch, a public health modeler at Harvard University, told the political pundit Bill Kristol last week during a podcast interview.

We should be doing more to prepare for the next pandemic

Harvard epidemiologist Marc Lipsitch told USA Today in April that he believes the COVID-19 outbreak has in fact been the Big One, calling it “the worst thing we’ve had from a public health standpoint in terms of an acute infection since 1918” and citing social disruption that is “unparalleled” since that pandemic just over a century ago.

Virus response hampered by ignorance about outbreak origins

"I think it should be a national priority and a global priority," said Marc Lipsitch, an epidemiologist at Harvard University School of Public Health. "I’m supportive of going back toward lockdown, but in a second, I’d be happy to see exempted situations where we have good evidence that transmission is not a problem."

“The helm of the pandemic is no longer being driven by anyone; it's chaos »

IRCEP Scientific Advisor Dr. Clara Menéndez, one of the twenty signatories of the letter, defends the "need" to evaluate what happened. In conversation with ABC she recognized that the current management of the pandemic is a "real chaos." We have lost command. The helm is no longer driven by anyone; for me it is a boat that is completely adrift, "she said.

How the pandemic might play out in 2021 and beyond

“The total incidence of SARS-CoV-2 through 2025 will depend crucially on this duration of immunity,” wrote Grad, Harvard epidemiologist Dr. Marc Lipsitch and colleagues in a May paper exploring possible scenarios.

School COVID clusters are rare – so what can we learn from the Al-Taqwa outbreak?

There is some evidence of ‘robust spread’ in high schools and more limited spread at primary schools, according to a new Medrxiv preprint evidence review by epidemiologists Professor Marc Lipsitch and Dr Edward Goldstein, and infectious diseases researcher Dr MugeCevik.

Special Report: Local governments ‘overwhelmed’ in race to trace U.S. COVID contacts

IRCEP Scientific Advisor Dr.Marc Lipsitch, a professor of epidemiology at the Harvard public health school said “You don’t clean up an oil spill with paper towels”

Coronavirus: 20% of the saliva samples tested positive

In May, the Malbrán Institute carried out a comparative study with 284 samples by swabbing and saliva, which determined that the latter "has a very high positive predictive value" that represents 99 percent effectiveness. Furthermore, "it can be a less invasive source of diagnosis and implies less contact with the health team," Claudia Perandones, technical scientific director of the Malbrán Institute, explained to Página / 12.

Pandemics can move faster than scientific research, but evidence still shows bar closures work

Writing in the Boston Review, Harvard epidemiologist Marc Lipsitch implores his colleagues to consider a broader pool of evidence then they might otherwise.

Once again! Malbrán surprises the world with another test to diagnose Covid-19

IRCEP Scientific Advisor Dr. Claudia Perandones, director of the MalbránInstitute , spoke with "Minute by Minute" about a test carried out by the institution. This will be done through saliva.

Scientists Warn New COVID-19 Outbreaks Still Part of 1st Wave

Professor Marc Lipsitch. professor of epidemiology and the Director of the Center for Communicable Disease Dynamics at the Harvard T.H. Chan School of Public Health, said that while there may be a slight downgrade in its activity, SARS-CoV-2, the virus that causes COVID-19, will not be humbled by heat.

Own assessments and plasma therapy: Argentine science is waging its personal battle towards the coronavirus

IRCEP Scientific Advisor Dr. Claudia Perandones said “What is examined is if the virus that circulates here have mutations that imply changes in the clinical: if it is more or less virulent, if it is transmitted more or less quickly”

Here’s Why So Many Kids Are Hospitalized with COVID-19 in Florida

IRCEP Scientific Advisor Dr. Sonja Rasmussen, a professor of pediatrics and epidemiology at the University of Florida said “It’s difficult to know for sure. But I think as Florida is surging, we are going to see more cases in everybody.” Kids are less likely to get severely sick with the disease, but that doesn’t mean they’re immune.

YOUNG PEOPLE VOLUNTEER AS HUMAN SUBJECTS FOR COVID-19 VACCINES DESPITE DANGERS

IRCEP Scientific Advisor Dr. Marc Lipsitch said “I think we need to prepare for human challenge trials and for the possibility that we will need to do them”

Research leaves unanswered questions about how coronavirus spreads in schools

IRCEP Scientific Advisor Dr. Sonja Rasmussen, a professor of pediatrics and epidemiology at the University of Florida said “I think we still have a lot to learn”

Experts reject Trump's comments on coronavirus testing

IRCEP Scientific Advisor Dr. Marc Lipsitch said “We’re doing more testing now because we have so many cases that we can’t keep up”

When schools reopen, will the COVID pandemic get worse?

IRCEP Scientific Advisor Dr. Sonja Rasmussen said “The most important thing for all of us to do to get our kids back to school is to get this outbreak under control”

COVID-19 is a wily virus — Can humans outsmart it?

IRCEP Scientific Advisor Dr. Marc Lipsitch has estimated that with minimal human intervention, SARS-CoV-2 would plausibly infect 20% to 60% of all adults — between 1.5 billion and 4.5 billion people. Even if it ends up being no more deadly than the seasonal flu — a highly optimistic assumption — between 1.5 million and 4.5 million would die.

How does COVID-19 affect kids? Science has answers and gaps

IRCEP Scientific Advisor Dr. Sonja Rasmussen a pediatrics professor at the University of Florida and former scientist at the U.S. Centers of Disease Control and Prevention said “There are still a lot of unanswered questions. That is the biggest challenge”

Profile of a killer: Unraveling the deadly new coronavirus

IRCEP Scientific Advisor Dr. Sonja Rasmussen said “In largely sparing children, the pandemic virus echoes the bugs that caused SARS and MERS”

The US's huge second peak shows warm weather has no effect on the coronavirus' spread, despite Trump's hopes. Here's why.

According to IRCEP Scientific Advisor Dr. Marc Lipsitch, for now, our lack of immunity to the new virus gives it "a temporary but important advantage"

Could COVID-19 Have Seasons? Searching for Signals in Earth Data

IRCEP Scientific Advisor Dr. Marc Lipsitch said “Seasonal variability may prove to be only a minor factor, slowing but not stopping the virus in summer, until more immunity builds up in the population”

We’re still not sure how COVID-19 impacts pregnant people

According to IRCEP Scientific Advisor Dr. Sonja Rasmussen “People are working really hard to try to understand the effects of COVID-19 on [expectant mothers and their babies], so I think we will have information soon,”

Can You Catch COVID-19 Twice?

Epidemiologist Marc Lipsitch tweeted that news stories like this make the mistake of “conflating ‘x is possible’ with ‘x is common.’” We don’t know yet if there’s something unusual about this person, or if cases like this are happening all over the world and not being detected.

Air Filter That Can Kill Coronavirus on Contact: Perfect Solution for Airborne Transmission?

According to Dr. Marc Lipsitch, the director of the Center for Communicable Disease Dynamics at Harvard T.H. Chan School of Public Health, although there could be minimal declines in the contagiousness of the coronavirus in warmer and wetter weather, it would not be enough to stop transmission alone.

What We Know (and Don’t) About Catching Covid-19 Outdoors

IRCEP Scientific Advisor Dr. Marc Lipsitch said “I don’t think that’s a riskless activity. But the wait staff was masked, and we were masked when we weren’t eating.” Importantly, he notes, this was in a part of Massachusetts where he knew there were very few cases.

A New Understanding of Herd Immunity

In mid-February, the Harvard epidemiologist Marc Lipsitch told me that this virus could infect most people in the United States if the country’s leaders did not take action.

Small Study Says Pregnant Women Can Pass Coronavirus to Their Fetus, But It's Rare

IRCEP Scientific Advisor Dr. Sonja Rasmussen, a professor at the University of Florida, told STAT, the studies "suggest to me that the virus can cross the placenta,"

Antibody tests were meant to be a game-changer. What went wrong?

IRCEP Scientific Advisor Dr. Marc Lipsitch writes in the New York Times “After being infected with SARS-CoV-2, most individuals will have an immune response, some better than others. That response, it may be assumed, will offer some protection over the medium term.”

Agonizing lag in coronavirus research puts pregnant women and babies at risk

IRCEP Scientific Advisor Dr. Sonja Rasmussen said “The truth is, answers may be elusive for a long time. This virus keeps surprising us,”

How the White House can build public trust and end the coronavirus crisis

IRCEP Scientific Advisor Dr. Marc Lipsitch, an epidemiologist at the Harvard T.H. Chan School of Public Health, says the first step the Trump administration should take is unmuzzling its scientists.

Public health experts worry CDC is being stifled on COVID-19

IRCEP Scientific Advisor Dr. Marc Lipsitch said “The CDC and other public health experts need to be on the front line talking to the country every day and talking science about what we know and what we don’t, the way they did in 2009,”

Public health experts urge socially distant Fourth of July celebrations, as the coronavirus surges across the U.S.

IRCEP Scientific Advisor Dr. Marc Lipsitch, an epidemiologist at Harvard’s T.H. Chan School of Public Health said “With any single point in time, it’s difficult to attribute a surge to one activity,”

Twitter round-up: Laurie Garrett’s tweet on the Covid-19 pandemic response shifting to the State Department most popular tweet in Q2 2020

IRCEP Scientific Advisor Dr. Marc Lipsitch, an infectious disease epidemiologist and microbiologist, shared an article on survivors of SARS1 from 2003 retaining neutralising antibody 9-17 years later. He further added that this established that functional antibody to a coronavirus persisted longer than previously shown.

Despite warnings, the US wasn’t prepared with masks for coronavirus. Now it’s too late

IRCEP Scientific Advisor Dr. Sonja Rasmussen, a University of Florida professor who co-wrote a federal study at the Centers for Disease Control and Prevention in 2017 on the lessons learned about personal protective equipment from public health responses said “All of us knew how desperate the need was”

Experts Say Pregnant Women Should Be At Top Of List For COVID-19 Vaccines

IRCEP Scientific Advisor Dr. Sonja Rasmussen points out that researchers are still gathering data on the novel coronavirus and there’s a chance that it could affect the fetus too.

After Six Months of Coronavirus, PPE Still Lacking

"All of us knew how desperate the need was" said IRCEP Scientific Advisor Dr. Sonja Rasmussen Dr. Sonja Rasmussen on the lessons learned about personal protective equipment from previous public health responses.

Coronavirus (COVID-19) Press Conference with Dr. Marc Lipsitch

IRCEP Scientific Advisor Dr. Marc Lipsitch discusses how vaccines are going to be distributed if and when they’re available around the world.

Ron DeSantis, on Fourth of July coronavirus risk: ‘take some small precautions'

IRCEP Scientific Advisor Dr. Marc Lipsitch said even if Florida’s coronavirus spike is mostly attributed to people age 18-44, any spread poses dangers for the vulnerable.

The Tricky Math of Herd Immunity for COVID-19

IRCEP Scientific Advisor Dr. Marc Lipsitch said “I think the range of R0 consistent with data for COVID-19 is larger than most people give credit to”.

What a ‘second wave’ of Covid-19 could look like and how to prevent it

IRCEP Scientific Advisor Dr. Marc Lipsitch said “A second wave would be similar to what we experienced in the spring of 2020, but it could be harder to control in the fall, when people are tired of social distancing”.

What Activities Are Safe as the Coronavirus Continues to Spread?

IRCEP Scientific Advisor Dr. Marc Lipsitch said “I think the data on large outbreaks suggests that the risk is considerably higher inside”.

How will the COVID-19 pandemic end?

IRCEP Scientific Advisor Dr. Marc Lipsitch has estimated that with minimal human intervention, SARS-CoV-2 would plausibly infect 20% to 60% of all adults.

South Korea says it has a second wave of coronavirus infections — but what does that really mean?

According to IRCEP Scientific Advisor Dr. Marc Lipsitch there is no agreed definition for a second wave — it simply refers to a sustained upsurge in cases.

Pregnant women not more susceptible to COVID-19, current data suggests

IRCEP Scientific Advisor Dr. Sonja Rasmussen said "Very limited information is available in the literature on how African American women who are pregnant are affected by COVID-19, so we were unable to address this question in our review,"

How likely are kids to get Covid-19? Scientists see a ‘huge puzzle’ without easy answers

IRCEP Scientific Advisor Marc Lipsitch said someone should be studying the issue, though he acknowledged that after the past few brutal months, he doesn’t have the energy to do it.

Trump’s coronavirus task force is absent as states struggle with worsening outbreaks.

IRCEP Scientific Advisor Dr. Marc Lipsitch said that lack of a coordinated and strategic response from the White House is a particularly great concern now.

Should you get tested for the coronavirus after protesting? Here’s what experts say about the risks.

IRCEP Scientific Advisor Dr. Marc Lipsitch wrote in an email, “there may be a spike in coronavirus cases in the coming weeks, but that’s not to say the protests would be the sole cause. The demonstrations are “one tree in a very big forest,”

Epidemiologists Fear ‘Stuttering, Endless Loop’ of Covid-19 Infections. Watch Out, Investors.

IRCEP Scientific Advisor Professor Marc Lipsitch notes that most states are reopening with the pandemic less well-controlled than were the cases in Europe and East Asia.

Berkeley Study Suggests Social-Distancing Measures Prevented 530 Million COVID-19 Infections By April

IRCEP Scientific Advisor Dr. Marc Lipsitch recently told the podcast 80,000 Hours that he expects the death rate to shake out somewhere between 0.2% and 1.5%.

The 2 different Covid-19 scenarios that worry experts

IRCEP Scientific Advisor Dr. Marc Lipsitch said that reopening with an already increasing epidemic means that the trend will only accelerate.

Claudia Perandones: the researcher who did not even have the books and today is betting on defeating the coronavirus

With a lot of personal and family effort IRCEP Scientific Advisor Dr. Claudia Perandones received an honorary medical degree, made a great career as a geneticist and coordinates the ANLIS Malbrán teams.

Coronavirus and the Flu: A Looming Double Threat

IRCEP Scientific Advisor Dr. Marc Lipsitch said “the worst-case scenario is both [the coronavirus and the flu] are spreading fast and causing severe disease, complicating diagnoses and presenting a double burden on the health care system”

The long journey to herd immunity

According IRCEP Scientific Advisor Dr. Marc Lipsitch, over time, the virus could settle into a regular seasonal pattern not so different from coronaviruses that cause the common cold.

How COVID-19 Made a Harvard Epidemiologist Into a Public Ambassador for Science

“I got a call from the Prime Minister of Israel who just wanted to talk about what they were doing,” IRCEP Scientific Advisor Marc Lipsitch said. “That's a level of advice that I've never been asked to do before and has been really interesting.”

What the latest research suggests about the coronavirus in pregnancy

IRCEP Scientific Advisor Dr. Sonja Rasmussen said “We won’t know how the risk to pregnant women compares with the general population until we have been able to compare pregnant and non-pregnant people of similar ages and backgrounds.”

Rare inflammatory condition affects some kids with COVID-19

IRCEP Scientific Advisor Dr. Sonja Rasmussen said more published data are needed to clarify how COVID-19 affects U.S. children and that the possibility of severe disease should not be dismissed.

Claudia Perandones: "Malbrán collaborates with coronavirus therapy projects, and soon there will be interesting results"

IRCEP Scientific Advisor Dr. Claudia Perandones, said "I cried many times in these months, because the situation was complex, the responsibility was very great and there was no room for error,"

Hydroxychloroquine for the prevention and treatment of covid-19 in pregnant women

The director of the ISGlobal Child, Maternal and Reproductive Health Initiative and coordinator of the study, Clara Menéndez, has indicated that this is the only clinical trial in the world in pregnant women and that the goal is to "generate evidence valuable on whether hydroxychloroquine is an effective and safe treatment to reduce the transmission of SARS-CoV-2 and the severity of the disease in this vulnerable group of the population ".

A day in Malbrán, the epicenter of the Argentine battle against the coronavirus

IRCEP Scientific Advisor Dr. Claudia Perandones joined the table in the meeting room where the directors of the institute receive BAE Business.

Miscarriage and Maternal Mortality in Pregnant COVID-19 Patients

IRCEP Scientific Advisor Kjersti Aagaard, reported another case series indicated mothers are at risk, too: seven pregnant women testing positive for COVID-19 died of cardiopulmonary complications.

Houston experts spell out what moms need to know about breastfeeding, COVID-19

IRCEP Scientific Advisor Dr. Kjersti Aagaard, professor of obstetrics and gynecology at Baylor and Texas Children’s Hospital, also recommends that moms breastfeed.

Coronavirus: Malbrán received 50 thousand tests to detect it

The ANLIS technical-scientific director and IRCEP Scientific Advisor Dr. Claudia Perandones said that it was a team of 25 scientists who managed to completely sequence the SARS Cov-2 virus in just six days.

The Malbrán Institute managed to photograph the strain of the Argentine coronavirus

The ANLIS technical-scientific director and IRCEP Scientific Advisor Dr. Claudia Perandones said that it was a team of 25 scientists who managed to completely sequence the SARS Cov-2 virus in just six days.

Influential Covid-19 model uses flawed methods and shouldn’t guide U.S. policies, critics say

According to IRCEP Scientific Advisor Dr. Marc Lipsitch it’s not a model that most of us in the infectious disease epidemiology field think is well suited.

Claudia Perandones, new technical director of Malbrán: "We are contributing to a future development of the vaccine"

IRCEP Scientific Advisor Dr. Claudia Perandones spoke about the important step that the Institute took this Tuesday, identifying the circulation of three different strains of Covid-19 in Argentina.

Who Is Immune to the Coronavirus?

According to IRCEP Scientific Advisor Dr. Marc Lipsitch, immunity after any infection can range from lifelong and complete to nearly nonexistent.

When will life return to normal? Expert says US testing is too far behind to know, expects second wave of cases

IRCEP Scientific Advisor Dr. Marc Lipsitch, told the USA TODAY Editorial Board on Wednesday that while China has lifted a more than two-month coronavirus lockdown in the city of Wuhan, testing is still too behind to know for sure when restrictions should be lifted in the United States.

Director of the Malbrán: "Whenever I hear the applause at 9 at night I feel a chill"

IRCEP Scientific Advisor Dr. Claudia Perandones explained the scope of having obtained the complete genome sequencing of the coronavirus in Argentina.

Scientists in Argentina decipher complete genome of SARS-Cov-2

IRCEP Scientific Advisor Claudia Perandones hailed the efforts of the scientists and technicians at the ANLIS institute, saying it was “a very important achievement” at a time of great “difficulty.”

Malbrán identified three strains of Covid 19 that would accelerate the discovery of a vaccine

IRCEP Scientific Advisor Dr. Claudia Perandones confirmed that the production of reagents with which to identify the virus could also be facilitated.

How COVID-19 Affects Children and Pediatric Care

IRCEP Scientific Advisor Dr. Sonja Rasmussen addresses what is known about COVID-19 in children and considerations for pediatric healthcare workers.

How COVID-19 might affect expectant mothers and their unborn child (podcast)

Sarah Boseley speaks to IRCEP Scientific Advisor Dr. Sonja Rasmussen about this challenging topic. Credit: The Guardian, Science Weekly.

Coronavirus ‘is the Big One … I hope never to see bigger

IRCEP Scientific Advisor Dr. Marc Lipsitch talks about coming stressors on the health care system from coronavirus and loosening control measures.

4 Things Pregnant Women Should Know About Coronavirus And COVID-19

IRCEP Scientific Advisor Dr. Kjersti Aagaard shares some simple things expectant women should know about COVID-19 and the coronavirus that causes it.

Navigating the Covid-19 pandemic: We’re just clambering into a life raft. Dry land is far away

IRCEP Scientific Advisor Dr. Marc Lipsitch: the storm is the Covid-19 pandemic, the life raft is the combination of intense measures we are using to slow the spread of the virus, and dry land is the end to the pandemic.

The origins of COVID-19, what’s working now, and next steps for the American response (podcast)

IRCEP Scientific Advisor Dr. Sonja Rasmussen's experience with previous outbreaks provides a unique insight into the challenges we face today Credit: Homeland Preparedness News.