Having Covid before being vaccinated may result in less immunity
A healthcare worker administers a dose of the Pfizer-BioNTech Covid-19 vaccine at a vaccination clinic in the Peabody Institute Library in Peabody, Massachusetts, U.S., on Wednesday, Jan. 26, 2022. Vanessa Leroy | Bloomberg | Getty Images People who caught Covid-19 before they were vaccinated had a weaker immune response to the shots than those who … Read more