Important update: Healthcare facilities
CDC has updated select ways to operate healthcare systems effectively in response to COVID-19 vaccination. Learn more
UPDATE
Given new evidence on the B.1.617.2 (Delta) variant, CDC has updated the guidance for fully vaccinated people. CDC recommends universal indoor masking for all teachers, staff, students, and visitors to K-12 schools, regardless of vaccination status. Children should return to full-time in-person learning in the fall with layered prevention strategies in place.
UPDATE
The White House announced that vaccines will be required for international travelers coming into the United States, with an effective date of November 8, 2021. For purposes of entry into the United States, vaccines accepted will include FDA approved or authorized and WHO Emergency Use Listing vaccines. More information is available here.
UPDATE
Travel requirements to enter the United States are changing, starting November 8, 2021. More information is available here.

COVID-19 Vaccines for Moderately or Severely Immunocompromised People

COVID-19 Vaccines for Moderately or Severely Immunocompromised People
DEFINITION
Immunocompromised

Having a weakened immune system can make you more likely to get severely ill from COVID-19. Many conditions and treatments can cause a person to be immunocompromised or have a weakened immune system. Primary immunodeficiency is caused by genetic defects that can be inherited. Prolonged use of corticosteroids or other immune weakening medicines can lead to secondary or acquired immunodeficiency.

Primary Series Shots

People who are immunocompromised are especially vulnerable to COVID-19. Everyone, including immunocompromised people, should receive a COVID-19 vaccine primary series if they are 5 years and older as soon as possible.

Additional Primary Shot and Booster Shot for Some Immunocompromised People

After completing the primary series, some moderately or severely immunocompromised people should get an additional primary shot.

Everyone 12 years and older, including immunocompromised people, should get a booster shot. If you are eligible for an additional primary shot, you should get this dose first before you get a booster shot.

IF YOU RECEIVED
Pfizer-BioNTech


Additional Primary Shot
People age 5+ who are moderately or severely immunocompromised should get an additional primary shot of Pfizer-BioNTech COVID-19 vaccine

Given 28 days after 2nd shot

Booster Shot

  • Teens ages 12–17 should only get a Pfizer-BioNTech COVID-19 vaccine booster shot
  • People age 18+ should get a booster shot of either Pfizer-BioNTech or Moderna (mRNA COVID-19 vaccines) in most situations

Given 5 months after additional primary shot

IF YOU RECEIVED
Moderna


Additional Primary Shot
People age 18+ who are moderately or severely immunocompromised should get an additional primary shot of Moderna COVID-19 vaccine

Given 28 days after 2nd shot

Booster Shot
People age 18+ should get a booster shot of either Pfizer-BioNTech or Moderna (mRNA COVID-19 vaccines) in most situations

Given 5 months after additional primary shot

IF YOU RECEIVED
Johnson & Johnson’s / Janssen


Additional Primary Shot
No additional primary shot is recommended at this time

Booster Shot
People age 18+ should get a booster shot of either Pfizer-BioNTech or Moderna (mRNA COVID-19 vaccines) in most situations

Given 2 months after  1st shot

Eligible For

IF YOU RECEIVED
Pfizer-BioNTech

IF YOU RECEIVED
Moderna

IF YOU RECEIVED
Johnson & Johnson’s Janssen

Eligible For

Additional Primary Shot

IF YOU RECEIVED
Pfizer-BioNTech

People age 5+ who are moderately or severely immunocompromised should get an additional primary shot of Pfizer-BioNTech COVID-19 vaccine

Given 28 days after 2nd shot

IF YOU RECEIVED
Moderna

People age 18+ who are moderately or severely immunocompromised should get an additional primary shot of Moderna COVID-19 vaccine

Given 28 days after 2nd shot

IF YOU RECEIVED
Johnson & Johnson’s Janssen

No additional primary shot is recommended at this time

Eligible For

Booster Shot

IF YOU RECEIVED
Pfizer-BioNTech

  • Teens ages 12–17 should only get a Pfizer-BioNTech COVID-19 vaccine booster shot
  • People age 18+ should get a booster shot of either Pfizer-BioNTech or Moderna (mRNA COVID-19 vaccines) in most situations

Given 5 months after additional primary shot

IF YOU RECEIVED
Moderna

People age 18+ should get a booster shot of either Pfizer-BioNTech or Moderna (mRNA COVID-19 vaccines) in most situations

Given 5 months after additional primary shot

IF YOU RECEIVED
Johnson & Johnson’s Janssen

People age 18+ should get a booster shot of either Pfizer-BioNTech or Moderna (mRNA COVID-19 vaccines) in most situations

Given 2 months after 1st shot

Who Is Moderately or Severely Immunocompromised?

People are considered to be moderately or severely immunocompromised if they have:

  • Been receiving active cancer treatment for tumors or cancers of the blood
  • Received an organ transplant and are taking medicine to suppress the immune system
  • Received a stem cell transplant within the last 2 years or are taking medicine to suppress the immune system
  • Moderate or severe primary immunodeficiency (such as DiGeorge syndrome, Wiskott-Aldrich syndrome)
  • Advanced or untreated HIV infection
  • Active treatment with high-dose corticosteroids or other drugs that may suppress your immune response

People should talk to their healthcare provider about their medical condition, and whether getting an additional primary shot is appropriate for them.

Scheduling Your Additional Primary Shot

If you need help scheduling your additional primary shot, contact the location that set up your previous appointmentIf you need to get your additional primary dose in a location different from where you received your previous shot, there are several ways you can find a vaccine provider. 

What to Expect during and after Your Additional Primary Shot Appointment

  • Bring your CDC COVID-19 Vaccination Record card to your additional primary shot appointment so your provider can fill in the information about your additional primary dose. If you did not receive a card at your first appointment, contact the vaccination site where you got your first shot or your state health department to find out how you can get a card.
  • You may experience side effects after getting a COVID-19 vaccine. These are normal signs that your body is building protection against COVID-19.
  • Use v-safe to tell CDC about any side effects. If you enter your additional primary shot in your v-safe account, the system will send you daily health check-ins.

Frequently Asked Questions