"If you got the Pfizer vaccine in January, February or March of this year, and are over 65, go get the booster, or if you are a frontline worker, go get a free booster now.
I’ll be getting my booster shot."That was President Joe Biden's message today, as he briefed the nation on COVID-19 vaccine booster doses.For Pfizer vaccine recipients, roughly 100 million Americans, a third dose of vaccine is now recommended by the Food and Drug Administration (FDA) and the Centers for Disease Control and Prevention (CDC) for several groups, including those over 65, and those ages 40 to 54 who have underlying medical conditions that put them at risk for severe infection.