Ask A Scientist: What Are Booster Vaccines?

The White House and CDC is recommending a third dose of the Pfizer and Moderna COVID-19 vaccines to provide lasting immunity against the coronavirus. Currently, qualified individuals can start to receive a third shot for the Pfizer vaccine, or booster, this fall, or eight months after their second dose. We spoke with our Director of Scientific Strategy Shay Ashline, PhD, MBA, to get the scoop on boosters and why they're effective.

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