Protection from mRNA Covid-19 vaccines likely lasts at least nine months, Dr. Peter Marks, director of the US Food and Drug Administration's Center for Biologics Evaluation and Research, said Tuesday.
Current research on mRNA Covid-19 vaccines has shown that the vaccines likely provide protection for at least six months.
“We're believing that it's probably going to last at least nine months, but we're going to be checking this,” Marks said in a webinar hosted by the American Medical Association.
Marks said that researchers will need to watch for whether immunity is dropping off more quickly for older and immunocompromised individuals. He added that it is possible the vaccines will require boosters.
“With each month, we'll get more certainty about when that might be necessary,” said Marks.