A national advisory panel will vote on Thursday whether Americans should change to an annual COVID-19 (like a flu shot), or to periodic booster shots. WebMD poses the most pressing questions to health professionals about switching to an annual shot.

A national advisory panel will vote on Thursday whether Americans should change to an annual COVID-19 (like a flu shot), or to periodic booster shots. WebMD poses the most pressing questions to health professionals about switching to an annual shot.