https://www.siliconvalley.com/2021/12/30/covid-pfizer-booster-eligibility-for-ages-12-to-15-expected-in-the-coming-days-source-says/

(CNN) — The US Food and Drug Administration is expected to broaden eligibility for Pfizer Covid-19 vaccine boosters to youths ages 12 to 15 in the coming days, according to a person familiar with the agency’s plan.

People as young as 16 are already eligible to receive boosters of the Pfizer vaccine six months after their two-dose series. Youths ages 12 to 15 have been eligible to receive the Pfizer Covid-19 vaccine since May; as of early July, about 4 million people in this age group had been fully vaccinated and would be eligible for a booster immediately.