FDA rejects Pfizer's booster shot, will be used for older, immunocompromised population

THAILAND - 2021/08/09: Thai medical official prepares a booster dose of COVID-19 Pfizer vaccine at the Bangkok Metropolitan Administration General Hospital in Bangkok. Thailand begin vaccinating booster doses with Pfizer Covid-19 vaccine to the medical personnel and frontline health workers who have already received two shots in twelve hospitals in Bangkok under the Bangkok Medical Office. More than 1.5 million doses of the Pfizer mRNA vaccines have been donated by the United States to Thailand. (Photo by Vichan Poti/Pacific Press/LightRocket via Getty Images)