Yes, some people have become reinfected. However, it’s recommended to wait two months since the last symptomatic infection before getting a booster. Some protective COVID-virus-targeting T cells and antibody-producing B cells remain after infection ends, but they need time to readjust and ...
The U.S. is expanding COVID-19 boosters, ruling that 16- and 17-year-olds can get a third dose of Pfizer’s vaccine. The U.S. and many other nations already were urging adults to get booster shots to pump up immunity that can wane months after vaccination, calls that intensified with...