Mayo Clinic Q and A: COVID-19 vaccine boosters and third doses

DEAR MAYO CLINIC: Both of my parents have been vaccinated for COVID-19. The doctor told my mom she is eligible for a third dose of a COVID-19 vaccine, but my dad is not eligible for a booster now. Can you explain who needs an additional vaccine now, and the differences between a booster and third dose. ANSWER: It's good to know that your parents are among the millions of people who have been vaccinated for COVID-19. A…
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