https://www.mercurynews.com/2022/01/04/cdc-oks-pfizer-booster-after-5-months-quiet-on-12-15-year-olds/ > The Centers for Disease Control and Prevention recommended booster shots Tuesday for those who received Pfizer’s COVID-19 vaccine five months after their first shots, a month earlier than had been called for since last fall. > The CDC’s recommended shorter interval between primary and booster shots for the Pfizer vaccine follows authorization approved Monday by the Food and Drug Administration.