Booster doses of Pfizer-BioNTech's COVID-19 vaccine are now available to adolescents ages 12 to 15 after the Centers for Disease Control and Prevention (CDC) on Wednesday endorsed a recommendation from an agency advisory panel.
An Israeli study looking into the effects of a fourth total, or second booster, of the Pfizer-BioNTech COVID-19 vaccine showed with a "high degree of certainty" it's safe and increased antibodies by fivefold one week post-vaccination,