CDC Confirms Vaccinated People Don’t Spread COVID

People who have been vaccinated against COVID-19 do not appear to carry or transmit the virus to others, the director of the Centers for Disease Control (CDC) said. 

CDC Director Dr. Rochelle P. Walensky said Tuesday, “Vaccinated people do not carry the virus, don’t get sick, and that is not just in the clinical trials but it’s also in real world data.”

The data came directly from a CDC study released Monday of nearly 4,000 health care workers, police, firefighters and other essential workers who received one of the two mRNA vaccines between Dec. 14 and March 13. The vaccinated people were tested for COVID-19 every week for 13 weeks to determine how effective the Pfizer and Moderna vaccines were in various daily settings within the U.S. outside of a clinical trial. 

Testing showed that the risk of infection went down by 90% every two or more weeks after a vaccinated participant received their second dose. Even with just one dose, the vaccine was 80% effective after two weeks. Of the 2,479 people in the study who were fully vaccinated, three contracted COVID-19, which is in line with the vaccine’s efficacy. The CDC also tracked 994 people who were not vaccinated, with 161 of those participants contracting COVID-19. No one in the study died. 

Additionally, there had been reports of health experts being concerned that vaccinated people could carry COVID-19 asymptomatically and potentially transmit the virus unknowingly. However, in the study, none of the vaccinated people tested positive for COVID-19 during the 13 week trial, so they did not carry the virus. 

Health experts have conditioned that, while the study’s findings are positive, the study does not show that vaccinated people can stop wearing masks. Vaccinated people must continue to wear masks as there is still a risk that they could get COVID-19, especially with several faster-spreading variants are spreading throughout the U.S.

Walensky admitted, “[What] I really would hate to have happen is to have another oncoming surge just as we’re reaching towards getting so many more people vaccinated.” 


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