The Centers for Disease Control & Prevention (CDC) explains the agency’s director’s claims that people vaccinated against COVID-19 will not become infected with the coronavirus or spread it to others.
In an interview with Rachel Maddow of MSNBC earlier this week, CDC Director Rochelle Walensky cited a study by the agency that found that people who received both doses of Pfizer and Moderna’s vaccine were 90 percent less likely to to become infected with the virus.
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“We can almost see the end,” says Walensky tell Maddow. ‘We vaccinate so fast, according to our data from the CDC, you know that people who are vaccinated do not carry the virus, that they do not get sick, and that it is not only in the clinical trials, but that it also in the real world, data is. ”
Walensky further stressed the importance of vaccinated to continue wearing masks and taking social distance.
However, the claim led to criticism from some scientists who said that the transmission of vaccinated people is probably unlikely, but that there is not enough information to claim that the vaccinated is completely protected and can not carry the virus and pass it on to others. does not spread.
“It’s much harder for vaccinated people to get infected, but do not think for one second that they can not get infected,” said Paul Duprex, director of the Center for Vaccine Research at the University of Pittsburgh. The New York times.
“If Dr. Walensky said that most people who are vaccinated do not carry a virus, we would not be conducting this discussion,” said John Moore, a virologist at Weill Cornell Medicine in New York.
“What we do know is that the vaccines are very effective against infection – there is more and more information about it – but nothing is 100 percent.”
The CDC later told the Times that Walensky spoke at length during the interview.
‘It is possible that some people who have been fully vaccinated may get COVID-19. The evidence is not clear whether they can spread the virus to others. We are continuing to evaluate the evidence, “a CDC spokesman told the Times.
The CDC study found that the two mRNA vaccines prevented 90 percent of infections two weeks after patients received the second of two doses, including asymptomatic and pre-symptomatic infections. After a single dose of any vaccine, participants’ risk of infection dropped by 80 percent.
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