Pfizer BioNTech COVID 19 vaccine

Mixing COVID-19 Vaccine Products

eAwaz Medicine

Primary series

CDC does not recommend mixing products for your primary series doses. If you received Pfizer-BioNTech or Moderna COVID-19 for the first dose of your primary series, you should get the same product for all following primary series doses.


People ages 18 years and older may get a different product for a booster than they got for their primary series. Children and teens ages 5 through 17 years who got a Pfizer-BioNTech primary series must get Pfizer-BioNTech for a booster.

Timing of COVID-19 Vaccination After Infection

People who have COVID-19 should wait to receive any vaccine, including a COVID-19 vaccine, until after they recover and complete their isolation period.

Additionally, people who recently had COVID-19 may consider delaying their next vaccine dose (primary dose or booster) by 3 months from when their symptoms started or, if they had no symptoms, when they first received a positive test. Reinfection is less likely in the weeks to months after infection. However, certain factors, such as personal risk of severe disease, local COVID-19 community level, and the most common COVID-19 variant currently causing illness, could be reasons to get a vaccine sooner rather than later.

Vaccination Outside the United States

If you received COVID-19 vaccines outside the United States, whether you are up to date depends on which COVID-19 vaccine (and how many doses) you received. Learn more about when people vaccinated outside the United States are considered fully vaccinated.

Allergic Reaction to a COVID-19 Vaccine Product

If you had a severe allergic reaction after a previous dose of a COVID-19 vaccine or if you have a known (diagnosed) allergy to a COVID-19 vaccine ingredient, you should not get that vaccine. If you have been instructed not to get one type of COVID-19 vaccine, you may still be able to get another type.

Scheduling Your COVID-19 Vaccines

To find COVID-19 vaccine locations near you: Search, text your ZIP code to 438829, or call 1-800-232-0233.

There are several ways you can find a vaccine provider. You can get your COVID-19 vaccines at the same location, or different locations.

  • If you need help scheduling your 2nd primary dose or a booster, contact the location that set up your previous appointment. It is never too late to get the added protection offered by completing your primary series or getting a COVID-19 booster.
  • Some community vaccination clinics have closed. You can get your 2nd primary dose or a booster at a different location.

Learn more about getting your COVID-19 vaccine.