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  1. Coronavirus Disease 2019 (COVID-19)

COVID-19 Frequently Asked Questions


Along with other federal, state, and local agencies and public health officials across the country, the FDA continues critical work to protect public health during the COVID-19 pandemic. Find the most recent FDA updates on our Coronavirus Disease 2019 page. 

The Centers for Disease Control and Prevention (CDC) has basic information about COVID-19 on their website at www.cdc.gov/coronavirus.

The frequently asked questions (FAQs) on this page are for a general public or consumer audience. Other audiences may want to refer to additional FAQs:

General Information 

Vaccines, Biologics, Human Tissues, and Blood Products

A: Everyone ages 12 and older can get a booster shot. View or print eligibility chart.

Ages 12 to 17: The FDA amended the emergency use authorization (EUA) for the Pfizer-BioNTech COVID-19 Vaccine to allow for a single booster dose for people ages 12 to 17 at least five months after completion of primary vaccination. People ages 12 to 17 should receive only the Pfizer-BioNTech Vaccine or Comirnaty (COVID-19 Vaccine, mRNA) as their booster dose.

Ages 18 and older: If you are 18 or older and received the Pfizer-BioNTech COVID-19 Vaccine, Comirnaty (COVID-19 Vaccine, mRNA) or Moderna COVID-19 Vaccine for your primary vaccination series at least 5 months ago, then you may receive a single booster dose of any of the currently available COVID-19 vaccines. They are:

  • Moderna COVID-19 Vaccine
  • Pfizer-BioNTech COVID-19 Vaccine
  • Comirnaty (COVID-19 Vaccine, mRNA)
  • Janssen (J&J) COVID-19 Vaccine

If you are 18 or older and received the Janssen (J&J) COVID-19 Vaccine as your primary vaccination at least 2 months ago, then you may receive a booster dose of any of the currently available COVID-19 vaccines.

The FDA-approved Comirnaty (COVID-19 Vaccine, mRNA) and the Pfizer-BioNTech COVID-19 Vaccine for people ages 12 and older, when prepared according to their respective instructions for use, can be used interchangeably without any safety or effectiveness concerns.

Drugs (Medicines)

Medical Devices Including Tests for COVID-19

Food Products

Animals, Pets and Animal Drug Products

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