You are considered fully vaccinated if you
- Received any single-dose COVID-19 vaccine series that is authorized or approved by the U.S. Food and Drug Administration (FDA) or listed for emergency use by World Health Organization (WHO).
- Received any combination of two doses of an FDA approved/authorized or WHO emergency use listed COVID-19 two-dose series with at least 17 days between doses.
The 10 COVID-19 vaccines that are listed for emergency use by WHO are Pfizer-BioNTech (COMIRNATY), Moderna (Spikevax), Janssen/J&J, AstraZeneca (Vaxzevria), Serum Institute of India (COVISHIELD), BIBP/Sinopharm, Sinovac (CoronaVac), Bharat Biotech (COVAXIN), Serum Institute of India (COVOVAX) and Novavax (NUVAXOVID).
If you received a COVID-19 vaccine that is not authorized or approved by the FDA or listed for emergency use by WHO, you may start over with an FDA-authorized or approved COVID-19 vaccine. Please note that no data are available on the safety or effectiveness of COVID-19 vaccination after receiving a non-FDA-authorized COVID-19 vaccine. Wait at least 28 days after you received the last dose of the non-FDA-authorized or approved vaccine before receiving another COVID-19 vaccine.