AdvertisementBooster longevity: Data reveals how long a third shot protectsJanuary 19, 2022Michaeleen DouclefffacebookEmailA resident receives a dose of the Pfizer COVID-19 vaccine at a health center in Jakarta, Indonesia, on Jan. 13. This week, Indonesia started a program to give booster shots to the elderly and people at risk of severe disease. (Dimas Ardian/Bloomberg via Getty Images)