https://apnews.com/95b8d9a432b60fe0e9713adf75dde0ee > With booster doses of Pfizer’s COVID-19 vaccine now authorized in the U.S., government advisers reconvened on Thursday to tackle the most contentious question yet: Exactly who should roll up their sleeves right away? > Late Wednesday, the Food and Drug Administration signed off on extra shots of the Pfizer formula for a broad swath of Americans: those 65 and older, people at high risk of severe illness, and health care workers and others in danger of becoming infected on the job.