Regulators could OK Pfizer boosters for older Americans this week

U.S. regulators could authorize a booster shot of the Pfizer Inc/BioNTech SE COVID-19 vaccine for older and some high-risk Americans early this week in time for the government to roll them out by Friday. The Food and Drug Administration is expected to give the nod to the third shots for at least this group before advisers to the U.S. Centers for Disease Control and Prevention are due to meet on Wednesday. The CDC panel will discuss more precise recommendations for how to administer the shots.