The Centers for Disease Control and Prevention (CDC) released a statement yesterday updating its COVID-19 vaccination guidelines to include a second booster dose for some adults, as well as for immunocompromised people age 12 and older.

The following second booster doses can be received at least four months after receiving any previous booster dose. Read on for details. 

• People age 50 and older may receive either a Pfizer or Moderna booster dose. 
• Immunocompromised people ages 12-17 may receive a Pfizer booster dose. 
• Immunocompromised people age 18 and older may receive either a Pfizer or Moderna booster dose. 
• Anyone age 18 and older who received the Johnson & Johnson vaccine for their primary and booster doses may receive either a Pfizer or Moderna vaccine as an additional booster.