The Biden administration announced that third shots of the two mRNA COVID-19 vaccines would be available to healthy people starting in mid-September. But many scientists say it’s not yet clear that boosters are needed.
Despite increased media attention to the possibility that the novel coronavirus may have escaped from a lab, no credible evidence has emerged to support it and most scientists think the virus likely has a natural origin.
Nearly 200 million doses of COVID-19 vaccines have been administered in the U.S., including 7.2 million doses of the Johnson & Johnson vaccine. The CDC and FDA recommended “a pause in the use” of the J&J vaccine “out of an abundance of caution” because of six cases of a rare type of blood clot.
Since the Centers for Disease Control and Prevention began recommending that members of the public mask up last spring, additional research has backed the use of face masks to combat the coronavirus, but knowledge gaps still remain. Here, we summarize the evidence.
The Johnson & Johnson vaccine is the third COVID-19 vaccine to be authorized by the Food and Drug Administration. Here, we give a rundown of basic facts about the vaccine and an overview of how it works.