Late in the month, the U.S. Food and Drug Administration (FDA) and the Centers for Disease Control and Prevention (CDC) separately endorsed a second booster shot for older Americans and people in high-risk categories. Eligible recipients can get a second COVID-19 booster shot if it has been at least four months since their first booster, the FDA said. The CDC stated that people over 65 and people in their 50s with chronic medical conditions should consider a second booster shot. Read more from The Associated Press.