Everyone ages 6 months and older vaccinated outside the United States should receive at least one dose of an updated (2023–2024 Formula) COVID-19 vaccine regardless of past COVID-19 vaccination history unless they received an updated (2023–2024 Formula) COVID-19 vaccine that is FDA-approved or FDA-authorized (i.e., Moderna, Novavax, Pfizer-BioNTech) or listed for emergency use by the World Health Organization (WHO).
Recommendations for people who were vaccinated outside the United States, but HAVE NOT received an updated (2023-2024 Formula) COVID-19 vaccine
People ages 5 years and older who have:
Previously received doses of COVID-19 vaccines that are FDA-approved, FDA-authorized or listed for emergency use by WHO:
- Administer one age-appropriate dose of an updated (2023-2024 Formula) COVID-19 vaccine at least 8 weeks after the last COVID-19 vaccine dose.
Previously received doses of COVID-19 vaccines that are not FDA-approved, FDA-authorized, or listed for emergency use by WHO:
- The doses do not count towards vaccination in the United States and these people are considered unvaccinated; initiate vaccination at least 8 weeks after the last COVID-19 vaccine dose.
Children ages 6 months–4 years who have:
Previously received doses of COVID-19 vaccines that are FDA-approved, FDA-authorized, or listed for emergency use by WHO:
- The doses count towards vaccination in the United States; administer the number of age-appropriate doses of an updated (2023–2024 Formula) mRNA COVID-19 vaccine.
Previously received doses of COVID-19 vaccines that are not FDA-approved, FDA-authorized, or listed for emergency use by WHO:
- The doses do not count towards vaccination in the United States and these people are considered unvaccinated; initiate vaccination at least 8 weeks after the last COVID-19 vaccine dose.
People who are moderately or severely immunocompromised who have:
Previously received doses of COVID-19 vaccines that are FDA-approved, FDA-authorized, or listed for emergency use by WHO:
- The doses count towards vaccination in the United States; administer the number of age-appropriate doses of an updated (2023–2024 Formula) mRNA COVID-19 vaccine.
Previously received doses of COVID-19 vaccines that are not FDA-approved, FDA-authorized, or listed for emergency use by WHO:
- The doses do not count towards vaccination in the United States and these people are considered unvaccinated; initiate vaccination at least 8 weeks after the last COVID-19 vaccine dose.