Centers for Disease control and prevention The CDC in the US retracted the controversial comments made by its director, Rochelle WallinskyThat is indicated by the people who They have been vaccinated against COVID They never infected or spread the virus to others.
The allegation raised questions about the precautionary measures the agency urged people who had been vaccinated to take only last month, such as wearing masks and only meeting unvaccinated people under certain circumstances.
Walinsky spoke extensively during this interview, “a spokesperson for the agency told the New York Times.” It is possible that some fully vaccinated people may develop COVID-19. The evidence is unclear about whether they could spread the virus to other people. We continue to evaluate the evidence. “
The agency was responding in part to the criticisms of scientists who indicated that the current research was far from sufficient to claim that vaccinated people could not spread the virus.
Paul Duprex, director of the Vaccine Research Center at University of Pittsburgh.
In a TV interview with MSNBC’s Rachel Maddow, Wallinski referred to data from the CDC that a single dose of the Moderna or Pfizer-BioNTech vaccine was 80 percent effective in preventing infection and that the two doses were 90 percent effective.
This indicates with certainty that transmission from vaccinated people may be unlikely, but Walensky’s comments indicate that protection was complete. He said: “Our CDC data currently indicates that people who have been vaccinated do not carry the virus, and are not getting sick, and this is not only in clinical trials, but in real-world data as well.”
Walensky emphasized The importance of continuing With the use of face masks and precautions, even for the vaccinated. However, the brief comment was broadly interpreted as saying that vaccines provide complete protection against infection or transmission.
In a pandemic that regularly generates scientific misinterpretation, experts have expressed sympathy for Walnski and his apparent desire for Americans to continue to take precautions. On Monday alone, she said the increase in cases had made her feel “an imminent disaster”.
“If Wallinski said most of the people who were vaccinated did not carry the virus, we wouldn’t have this discussion,” said John Moore, a virologist at Weill Cornell Medicine in New York.
What we do know is that vaccines are hugely effective against infection (there is more and more data on this), but nothing is 100 percent. ”“ It’s an important public health message that needs to be done right. ”
a It can affect misinterpretation Some experts said the agency’s urgent calls for immunization. As of Wednesday, 30 percent of Americans had received at least one dose of the vaccine and 17 percent were fully immunized.
“There can’t be any difference between what the research shows (impressive but imperfect protection) and how it is described,” said Peter Bach, director of the Center for Health Policy and Results at Memorial Sloan Kettering Cancer Center in New York.
This lends itself to skeptics who believe the government is smearing the flag, Bach said, and completely undermines any remaining arguments about why people continue to wear masks after getting vaccinated.
All COVID-19 vaccines are amazingly successful in preventing serious disease and death, but how well they prevent infection is still less clear.
Vaccine clinical trials are only designed to evaluate whether vaccines prevent a serious condition and death. The CDC investigation on Monday reached the welcome conclusion that vaccines are very effective at preventing infection.
Study recruited 3950 health workers First responders and others at risk of infection. Participants wiped themselves weekly and sent them for testing, allowing federal investigators to track all infections, whether they were symptoms or not. The study found that after two weeks of vaccination, the vast majority of people who were vaccinated remained virus-free.
Follow-up data from clinical trials support this finding. In the results released by Pfizer and BioNTech on Wednesday, for example, 77 people who received the vaccine were infected with the Coronavirus, compared to the 850 people who received the placebo.
It is clear that some people who have been vaccinated are getting the infection, “Duprex said. We stop the symptoms, and we keep people out of hospitals. But we are not making them completely resistant to the infection.
Experts said the number of people who have been vaccinated and who have become infected is likely to be higher among those receiving vaccines made by Johnson & Johnson and AstraZeneca, which are less effective. (However, these injections are worth getting, as they consistently prevent severe cases and death.)
Infection rates may also be higher among people exposed to a variant of the virus that can bypass the immune system.
Cases are increasing across the United States again, threatening an outbreak of the disease again. Walnski’s comment came just a day after he made an emotional plea for the American people to continue to take precautions.
I’m just asking you to wait a little longer, to get vaccinated when you can, so that all these people we all love will stay here when this epidemic is over. “
Experts said that with the numbers increasing, it is especially important that immunized people continue to protect those who have not yet been vaccinated against the virus.
“People who have been vaccinated should not throw off their masks at this time,” Moore said. “This epidemic is not over yet.”
A man receives his first dose of Moderna vaccine in the Bronx, New York on April 1, 2021.
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