What you need to know about COVID vaccine booster shots

Last week, both the Food and Drug Administration and the Centers for Disease Control and Prevention authorized COVID-19 vaccine booster shots, under emergency use, for certain Americans who are fully vaccinated with the Pfizer vaccine. Those who are eligible are now able to receive a booster shot six months after their second injection.

Yahoo News Medical Contributor Dr. Kavita Patel explains why we need this additional dose of the vaccine and who currently qualifies for the booster shots.

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