Dr. Vinay Prasad replaces Dr. Peter Marks, who Prasad had called "dangerous."

The incidence of heart attacks and strokes was lower after COVID-19 vaccination than before or without vaccination, according to a new study involving nearly

The Trump administration has fired staff who were working on the Food and Drug Administration's bird flu response as part of its mass layoffs at the Department of Health and Human Services, according to a source familiar with the situation.