Two major medical groups will begin reviewing vaccine safety and effectiveness after major changes at the U.S. Centers for Disease Control and Prevention (CDC) have raised alarms among experts.

Dr. Céline Gounder, an internist, epidemiologist and infectious disease specialist, is a CBS News medical contributor as well as senior fellow and editor-at-large for public health at KFF Health News.

One panelist accused the F.D.A. of withholding data on potential harms. The advisers also are reviewing research on vaccines ...

A top U.S. health official on Monday called for the combined measles-mumps-rubella shot to be broken up, drawing a quick rebuke from vaccine maker Merck, which said there is no scientific evidence ...

The Centers for Disease Control and Prevention has officially updated guidelines for COVID-19 and chickenpox vaccines based on recommendations made last month by the agency's vaccine advisory ...