FDA green lights booster dose of Pfizer vaccine for older, more vulnerable Americans

FDA green lights booster dose of Pfizer vaccine for older, more vulnerable Americans

Source: 
BioPharma Dive
snippet: 

The Food and Drug Administration will allow older adults and people at high risk of severe COVID-19 to receive a third dose of Pfizer and BioNTech's coronavirus vaccine, announcing Wednesday night an amended emergency authorization for the shot.