Moderately or severely immunocompromised people age 18 or older who received an initial Johnson & Johnson COVID-19 vaccine for their primary vaccination should:

• receive an additional dose of an mRNA vaccine (Pfizer or Moderna) at least 28 days after their first Johnson & Johnson dose.
• receive an initial mRNA COVID-19 booster dose (Pfizer or Moderna) at least 2 months after completing their first mRNA vaccine dose.
• receive a second mRNA COVID-19 booster dose at least 4 months after completing their second mRNA vaccine dose.

For primary and booster vaccination, people should receive an age-appropriate mRNA vaccine (Pfizer or Moderna). The Johnson & Johnson vaccine is authorized for anyone age 18 and older if no other approved vaccine is available.

Get more information from the Centers for Disease Control and Prevention. Please talk to your doctor if you have questions. The recommended vaccination schedule from the Centers for Disease Control and Prevention is available here.