Although your initial COVID-19 vaccination was effective in preventing severe illness, studies have shown that the vaccines' protection can decrease over time.

Boosters improve your protection against serious illness or death from COVID-19 infection.

They are safe and recommended for most people, including children.

Updated boosters help restore protection that has decreased since your previous vaccination and provide better protection against newer variants.

Your vaccination status is considered “up to date” only after you have completed your initial series of doses and received the most recent booster dose recommended by the Centers for Disease Control and Prevention (CDC). The CDC provides a detailed overview of vaccine and booster recommendations as well as an interactive tool that helps you determine your eligibility for boosters.  

People who are moderately or severely immunocompromised have specific recommendations for boosters.

 "Being the most updated with your COVID-19 vaccination remains the best way to protect yourself against the virus and its variants. We recommend that you complete your booster dose as soon as you are eligible, to optimize your immunity," says Wilbur Chen, MD, MS, professor of medicine at the University of Maryland School of Medicine (UMSOM) and an adult infectious disease expert in the school's Center for Vaccine Development and Global Health (CVD). 

Ready for your booster? Find out where to get a booster in Maryland.

Updated 9/28/2022


UMMS provides our expert-reviewed content to keep our community informed. When sharing this copyrighted content, please link to our site so that critical updates are reflected.