A single booster dose of the COVID-19 vaccine by Pfizer-BioNTech (30 mcg in 0.3 mL) may be administered
to adults 18 years and older at least 5 months after completion of a non-FDA authorized primary vaccination as long as the primary vaccine has been issued Emergency Use Listing (EUL) by WHO. The ten 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 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 or approved 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 vaccine.