What you need to know about the vaccine

Frequently Asked Questions


What Is Emergency Use Authorization?

According to the FDA, “During a public health emergency, the FDA can use its Emergency Use Authorization (EUA) authority to allow the use of unapproved medical products, or unapproved uses of approved medical products, to diagnose, treat, or prevent serious or life-threatening diseases when certain criteria are met, including that there are no adequate, approved, and available alternatives.”

Getting Booster Doses

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What should I mention to my vaccination provider before I get a booster dose?

Tell the vaccination provider about all of your medical conditions, including if you:

  • have any allergies
  • have had myocarditis (inflammation of the heart muscle) or pericarditis (inflammation of the lining outside the heart)
  • have a fever
  • have a bleeding disorder or are on a blood thinner
  • are immunocompromised or are on a medicine that affects your immune system
  • are pregnant or plan to become pregnant
  • are breastfeeding
  • have received another COVID-19 vaccine
  • have ever fainted in association with an injection
When can I receive a booster dose of Pfizer-BioNTech COVID-19 Vaccine or COMIRNATY® (COVID-19 Vaccine, mRNA) ?

FDA-Approved or FDA-Authorized Vaccination Schedule

A single booster dose may be administered at least 5 months after completion of a primary series of the Pfizer-BioNTech COVID-19 Vaccine to individuals 5 through 11 years of age.

A single booster dose may be administered at least 5 months after completion of a primary series of the Pfizer-BioNTech COVID-19 Vaccine or COMIRNATY® (COVID-19 Vaccine, mRNA) to individuals 12 and older.

A first booster dose of the vaccine may be administered to individuals 18 years of age and older who have completed a primary vaccination series with another FDA-authorized or FDA-approved COVID-19 vaccine. The booster schedule is based on the labeling information of the vaccine used for primary series.

A second booster dose to individuals 50 years of age and older who have received a first booster dose of any authorized or approved COVID-19 vaccine.

A second booster dose to individuals 12 years of age and older with certain kinds of immunocompromise and who have received a first booster dose of any authorized or approved COVID-19 vaccine.

Individuals should check with their healthcare provider regarding timing of their booster dose.

Select CDC Considerations for Intervals for mRNA COVID-19 Vaccine First Booster in Immunocompromised

The CDC has provided guidance that differs from the above FDA-authorized first booster interval for individuals 12 years of age and older who are immunocompromised. The CDC’s Interim Clinical Considerations for Use of COVID-19 Vaccines  for healthcare professionals recommends that a first booster dose of an mRNA COVID-19 vaccine be given at least 3 months after completion of a third primary series dose for people 12 years of age and older who are moderately or severely immunocompromised.

Your healthcare or vaccination provider will help you decide the timing of your first booster dose that is right for you.

Can I get the Pfizer-BioNTech COVID-19 Vaccine booster dose if the original vaccine I received was not Pfizer-BioNTech COVID-19 Vaccine or COMIRNATY® (COVID-19 Vaccine, mRNA)?

A first booster dose of the vaccine may be administered to individuals 18 years of age and older who have completed a primary vaccination series with another FDA-authorized or FDA-approved COVID-19 vaccine. The booster schedule is based on the labeling information of the vaccine used for the primary series.

A second booster dose may be administered to individuals 50 years of age and older, or to individuals 12 years of age and older with certain kinds of immunocompromise, who have received a first booster dose of any FDA-authorized or FDA-approved COVID-19 vaccine.

Individuals should check with their healthcare provider regarding timing of their booster doses.

Where can I get a booster dose?

To learn about where you can get a booster dose, visit www.vaccines.gov.

Considerations If You Are Immunocompromised

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What if I am immunocompromised?

According to the Emergency Use Authorization Recipients and Caregivers Fact Sheet (12 years of age & older) and Recipients and Caregivers Fact Sheet (5 through 11 years of age), individuals 5 years of age and older with moderately or severely immunocompromising conditions may receive a third primary series dose of vaccine 28 days after their second primary series dose. Immunocompromised persons may have a diminished immune response to the vaccine, and you should continue to maintain physical precautions to help prevent COVID‑19. In addition, your close contacts should be vaccinated as appropriate.

If I am immunocompromised, what should my Pfizer-BioNTech COVID-19 vaccination schedule be for primary series vaccinations and booster doses?

FDA-Approved or FDA-Authorized Vaccination Schedule

For individuals 5 through 11 years of age who have certain kinds of immunocompromise, Pfizer-BioNTech COVID-19 Vaccine is FDA authorized under Emergency Use Authorization (EUA) as a 3-dose primary series. The first and second dose of the vaccine should be given 3 weeks apart, and the third dose should be given at least 4 weeks (28 days) after the second dose. A single booster dose of the vaccine is FDA authorized for individuals 5 through 11 years of age who have completed a primary series with Pfizer-BioNTech COVID-19 Vaccine.

For individuals 12 years of age and older who have certain kinds of immunocompromise, the vaccine is FDA authorized under Emergency Use Authorization as a 3-dose primary series. The first and second dose of the vaccine should be given 3 weeks apart, and the third dose should be given at least 4 weeks (28 days) after the second dose. A first booster dose of the vaccine may be administered at least 5 months after completion of a primary vaccination series with Pfizer-BioNTech COVID-19 Vaccine or COMIRNATY® (COVID-19 Vaccine, mRNA). A second booster dose of the vaccine may be administered at least 4 months after receipt of a first booster dose of any FDA-authorized or FDA-approved COVID-19 vaccine.

Select CDC Considerations for Intervals for mRNA COVID-19 Vaccine First Booster in Immunocompromised

The CDC has provided guidance that differs from the above FDA-authorized first booster interval for immunocompromised individuals 12 years of age and older. The CDC’s Interim Clinical Considerations for Use of COVID-19 Vaccines  for healthcare professionals recommends that a booster dose of an mRNA COVID-19 vaccine be given at least 3 months after completion of the third primary series dose for people 12 years of age and older who are moderately or severely immunocompromised.

Your healthcare or vaccination provider will help you decide the timing of your first booster dose that is right for you.

If I am immunocompromised and received 3 doses of Pfizer-BioNTech COVID-19 Vaccine as part of my primary series, am I able to get a booster?

FDA-Approved or FDA-Authorized Vaccination Schedule

For individuals 5 through 11 years of age, a single booster dose of the vaccine is FDA authorized to be given at least 5 months after completion of the primary series with Pfizer-BioNTech COVID-19 Vaccine.

For individuals 12 years of age and older, a first booster dose of the vaccine is FDA authorized to be given at least 5 months after completion of the primary series with Pfizer-BioNTech COVID-19 Vaccine or COMIRNATY® (COVID-19 Vaccine, mRNA).

Select CDC Considerations for Intervals for mRNA COVID-19 Vaccine First Booster in Immunocompromised

The CDC has provided guidance that differs from the above FDA-authorized first booster interval. The CDC’s Interim Clinical Considerations for Use of COVID-19 Vaccines  for healthcare professionals recommends that a first booster dose of an mRNA COVID-19 vaccine be given at least 3 months after completion of the third primary series dose for people 12 years of age and older who are moderately or severely immunocompromised.

Your healthcare or vaccination provider will help you decide the timing of your first booster dose that is right for you.

Who should not get the booster dose?

You should not get the single booster dose if you:​​​​​​​

  • had a severe allergic reaction after a previous dose of this vaccine
  • had a severe allergic reaction to any ingredient of this vaccine​​​​​​​

Report vaccine side effects to FDA/CDC Vaccine Adverse Event Reporting System (VAERS) and Pfizer Inc.



  • Patients should always ask their doctors for medical advice about adverse events.
  • You are encouraged to report negative side effects of vaccines to the U.S. Food and Drug Administration (FDA) and the Centers for Disease Control and Prevention (CDC). Visit https://vaers.hhs.gov/reportevent.html or call 1-800-822-7967.

IMPORTANT SAFETY INFORMATION AND INDICATION/AUTHORIZED USES

Pfizer-BioNTech COVID-19 Vaccine is FDA authorized under Emergency Use Authorization (EUA) for active immunization to prevent coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in individuals 6 months of age and older.

Pfizer-BioNTech COVID-19 Vaccine is FDA authorized to provide:

Primary Series
  • a 3-dose primary series to individuals 6 months through 4 years of age
  • a 2-dose primary series to individuals 5 years through 11 years of age
  • a 2-dose primary series to individuals 12 years of age and older
  • a third primary series dose to individuals 5 years of age and older with certain kinds of immunocompromise
Booster Series
  • a single booster dose to individuals 5 through 11 years of age who have completed a primary series with Pfizer-BioNTech COVID-19 Vaccine
  • a first booster dose to individuals 12 years of age and older who have completed a primary series with Pfizer-BioNTech COVID-19 Vaccine or COMIRNATY® (COVID-19 Vaccine, mRNA)
  • a first booster dose to individuals 18 years of age and older who have completed primary vaccination with a different authorized or approved COVID-19 vaccine. The booster schedule is based on the labeling information of the vaccine used for the primary series
  • a second booster dose to individuals 50 years of age and older who have received a first booster dose of any authorized or approved COVID-19 vaccine
  • a second booster dose to individuals 12 years of age and older with certain kinds of immunocompromise and who have received a first booster dose of any authorized or approved COVID-19 vaccine
COMIRNATY® INDICATION

COMIRNATY® (COVID-19 Vaccine, mRNA) is a vaccine approved for active immunization to prevent coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in individuals 12 years of age and older.

HOW IS COMIRNATY ® GIVEN?

COMIRNATY® is administered as an injection into the muscle as a 2-dose primary series, 3 weeks apart.

COMIRNATY® AUTHORIZED USES

COMIRNATY® (COVID-19 Vaccine, mRNA) is FDA authorized under Emergency Use Authorization (EUA) to provide:

Primary Series
  • a third primary series dose to individuals 12 years of age and older with certain kinds of immunocompromise
Booster Dose
  • a first booster dose to individuals 12 years of age and older who have completed a primary series with Pfizer-BioNTech COVID-19 Vaccine or COMIRNATY®
  • a first booster dose to individuals 18 years of age and older who have completed primary vaccination with another authorized or approved COVID-19 vaccine. The booster schedule is based on the labeling information of the vaccine used for the primary series
  • a second booster dose to individuals 50 years of age and older who have received a first booster dose of any authorized or approved COVID-19 vaccine
  • a second booster dose to individuals 12 years of age and older with certain kinds of immunocompromise and who have received a first booster dose of any authorized or approved COVID-19 vaccine
EMERGENCY USE AUTHORIZATION

Emergency uses of the vaccine have not been approved or licensed by FDA, but have been authorized by FDA, under an Emergency Use Authorization (EUA) to prevent Coronavirus Disease 2019 (COVID-19) for use in individuals 6 months of age and older. The emergency uses are only authorized for the duration of the declaration that circumstances exist justifying the authorization of emergency use of the medical product under Section 564(b)(1) of the FD&C Act unless the declaration is terminated or authorization revoked sooner.

INTERCHANGEABILITY

FDA approved COMIRNATY® (COVID-19 Vaccine, mRNA) and the Pfizer-BioNTech COVID-19 Vaccine FDA authorized for Emergency Use Authorization (EUA) for individuals 12 years of age and older can be used interchangeably by a vaccination provider when prepared according to their respective instructions for use.

The formulations of the Pfizer-BioNTech COVID-19 Vaccine authorized for use in individuals 6 months through 4 years of age, 5 through 11 years of age, and 12 years of age and older are different and should therefore not be used interchangeably.

IMPORTANT SAFETY INFORMATION

Tell your vaccination provider about all the vaccine recipient’s medical conditions, including if the vaccine recipient:

  • has any allergies
  • has had myocarditis (inflammation of the heart muscle) or pericarditis (inflammation of the lining outside the heart)
  • has a fever
  • has a bleeding disorder or is on a blood thinner
  • is immunocompromised or is on a medicine that affects the immune system
  • is pregnant, plans to become pregnant, or is breastfeeding
  • has received another COVID-19 vaccine
  • has ever fainted in association with an injection
  • Pfizer-BioNTech COVID-19 Vaccine or COMIRNATY® (COVID-19 Vaccine, mRNA) may not protect all vaccine recipients
  • The vaccine recipient should not receive Pfizer-BioNTech COVID-19 Vaccine or COMIRNATY® (COVID-19 Vaccine, mRNA) if the vaccine recipient had a severe allergic reaction to any of its ingredients or had a severe allergic reaction to a previous dose of Pfizer-BioNTech COVID-19 Vaccine or COMIRNATY®
  • There is a remote chance that Pfizer-BioNTech COVID-19 Vaccine or COMIRNATY® (COVID-19 Vaccine, mRNA) could cause a severe allergic reaction. A severe allergic reaction would usually occur within a few minutes to 1 hour after getting a dose of the vaccine. For this reason, your vaccination provider may ask the vaccine recipient to stay at the place where the vaccine was administered for monitoring after vaccination. If the vaccine recipient experiences a severe allergic reaction, call 9-1-1 or go to the nearest hospital
    • Seek medical attention right away if the vaccine recipient has any of the following symptoms: difficulty breathing, swelling of the face and throat, a fast heartbeat, a bad rash all over the body, dizziness, and weakness

  • Myocarditis (inflammation of the heart muscle) and pericarditis (inflammation of the lining outside the heart) have occurred in some people who have received the vaccine, more commonly in adolescent males and adult males under 40 years of age than among females and older males. In most of these people, symptoms began within a few days following receipt of the second dose of the vaccine. The chance of having this occur is very low
    Seek medical attention right away if the vaccine recipient has any of the following symptoms after receiving the vaccine, particularly during the 2 weeks after receiving a vaccine dose:
    • Chest pain
    • Shortness of breath or difficulty breathing
    • Feelings of having a fast-beating, fluttering, or pounding heart
    • Fainting
    • Unusual and persistent irritability
    • Unusual and persistent poor feeding
    • Unusual and persistent fatigue or lack of energy
    • Persistent vomiting
    • Persistent pain in the abdomen
    • Unusual and persistent cool, pale skin
  • Fainting can happen after getting injectable vaccines, including Pfizer-BioNTech COVID-19 Vaccine or COMIRNATY® (COVID-19 Vaccine, mRNA). Sometimes people who faint can fall and hurt themselves. For this reason, your vaccination provider may ask the vaccine recipient to sit or lie down for 15 minutes after receiving the vaccine
  • Some people with weakened immune systems may have reduced immune responses to Pfizer-BioNTech COVID-19 Vaccine or COMIRNATY® (COVID-19 Vaccine, mRNA)
  • Additional side effects include rash, itching, hives, swelling of the face, injection site pain, tiredness, feeling weak or lack of energy, headache, muscle pain, chills, joint pain, fever, injection site swelling, injection site redness, nausea, feeling unwell, swollen lymph nodes (lymphadenopathy), decreased appetite, diarrhea, vomiting, arm pain, fainting in association with injection of the vaccine, and irritability.

These may not be all the possible side effects of the vaccine. Call the vaccination provider or healthcare provider about bothersome side effects or side effects that do not go away.

  • You should always ask your healthcare providers for medical advice about adverse events. Report vaccine side effects to the US Food and Drug Administration (FDA) and the Centers for Disease Control and Prevention (CDC) Vaccine Adverse Event Reporting System (VAERS). The VAERS toll-free number is 1‐800‐822‐7967 or report online to www.vaers.hhs.gov/reportevent.html. You can also report side effects to Pfizer Inc. at www.pfizersafetyreporting.com or by calling 1-800-438-1985


Vaccine Authenticity: What You Need to Know

Around the world, Pfizer and BioNTech are working in partnership with government agencies to safely and efficiently distribute the vaccine. There are currently no legitimate COVID-19 vaccines produced by any manufacturer that are available for purchase by individuals.

We urge everyone to be wary of any offers for COVID-19 vaccinations that do not come from an authorized source – meaning, from anyone other than a healthcare provider or local government health agency.

The vaccine:
  • Is NOT sold online. Any sales of COVID-19 vaccines over the Internet, including from online pharmacies, are not legitimate
  • Cannot be purchased in individual doses
  • Is not taken by mouth and is not available in a capsule or tablet form
  • Can only be administered by licensed healthcare professionals at government-authorized vaccination centers – such as doctors' offices, authorized pharmacies, outpatient clinics, community vaccination locations, and hospitals

For more information

General Product Inquiries
Call
1-877-829-2619 1-877-829-2619

Medical Information
Visit
PfizerMedicalInformation.com
or call
1-800-438-1985 1-800-438-1985

*This website is neither owned nor controlled by Pfizer. Pfizer does not endorse and is not responsible for the content or services of this site.

Important Safety Information

Indication/Authorized Uses

Important Safety Information

Tell your vaccination provider about all the vaccine recipient’s medical conditions, including if the vaccine recipient:

  • has any allergies
  • has had myocarditis (inflammation of the heart muscle) or pericarditis (inflammation of the lining outside the heart)
  • has a fever
  • has a bleeding disorder or is on a blood thinner
  • is immunocompromised or is on a medicine that affects the immune system
  • is pregnant, plans to become pregnant, or is breastfeeding
  • has received another COVID-19 vaccine
  • has ever fainted in association with an injection
  • Pfizer-BioNTech COVID-19 Vaccine or COMIRNATY® (COVID-19 Vaccine, mRNA) may not protect all vaccine recipients
  • The vaccine recipient should not receive Pfizer-BioNTech COVID-19 Vaccine or COMIRNATY® (COVID-19 Vaccine, mRNA) if the vaccine recipient had a severe allergic reaction to any of its ingredients or had a severe allergic reaction to a previous dose of Pfizer-BioNTech COVID-19 Vaccine or COMIRNATY®
  • There is a remote chance that Pfizer-BioNTech COVID-19 Vaccine or COMIRNATY® (COVID-19 Vaccine, mRNA) could cause a severe allergic reaction. A severe allergic reaction would usually occur within a few minutes to 1 hour after getting a dose of the vaccine. For this reason, your vaccination provider may ask the vaccine recipient to stay at the place where the vaccine was administered for monitoring after vaccination. If the vaccine recipient experiences a severe allergic reaction, call 9-1-1 or go to the nearest hospital

    • Seek medical attention right away if the vaccine recipient has any of the following symptoms: difficulty breathing, swelling of the face and throat, a fast heartbeat, a bad rash all over the body, dizziness, and weakness
  • Myocarditis (inflammation of the heart muscle) and pericarditis (inflammation of the lining outside the heart) have occurred in some people who have received the vaccine, more commonly in adolescent males and adult males under 40 years of age than among females and older males. In most of these people, symptoms began within a few days following receipt of the second dose of the vaccine. The chance of having this occur is very low
    Seek medical attention right away if the vaccine recipient has any of the following symptoms after receiving the vaccine, particularly during the 2 weeks after receiving a vaccine dose:
    • Chest pain
    • Shortness of breath or difficulty breathing
    • Feelings of having a fast-beating, fluttering, or pounding heart
    • Fainting
    • Unusual and persistent irritability
    • Unusual and persistent poor feeding
    • Unusual and persistent fatigue or lack of energy
    • Persistent vomiting
    • Persistent pain in the abdomen
    • Unusual and persistent cool, pale skin
  • Fainting can happen after getting injectable vaccines, including Pfizer-BioNTech COVID-19 Vaccine or COMIRNATY® (COVID-19 Vaccine, mRNA). Sometimes people who faint can fall and hurt themselves. For this reason, your vaccination provider may ask the vaccine recipient to sit or lie down for 15 minutes after receiving the vaccine
  • Some people with weakened immune systems may have reduced immune responses to Pfizer-BioNTech COVID-19 Vaccine or COMIRNATY® (COVID-19 Vaccine, mRNA)
  • Additional side effects include rash, itching, hives, swelling of the face, injection site pain, tiredness, feeling weak or lack of energy, headache, muscle pain, chills, joint pain, fever, injection site swelling, injection site redness, nausea, feeling unwell, swollen lymph nodes (lymphadenopathy), decreased appetite, diarrhea, vomiting, arm pain, fainting in association with injection of the vaccine, and irritability

These may not be all the possible side effects of the vaccine. Call the vaccination provider or healthcare provider about bothersome side effects or side effects that do not go away.

  • You should always ask your healthcare providers for medical advice about adverse events. Report vaccine side effects to the US Food and Drug Administration (FDA) and the Centers for Disease Control and Prevention (CDC) Vaccine Adverse Event Reporting System (VAERS). The VAERS toll-free number is 1‐800‐822‐7967 or report online to www.vaers.hhs.gov/reportevent.html. You can also report side effects to Pfizer Inc. at www.pfizersafetyreporting.com or by calling 1-800-438-1985

Fact Sheets and Prescribing Information for individuals 5 years of age and older:



Indication/Authorized Uses

Pfizer-BioNTech COVID-19 Vaccine is FDA authorized under Emergency Use Authorization (EUA) for active immunization to prevent coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in individuals 6 months of age and older.

Pfizer-BioNTech COVID-19 Vaccine is FDA authorized to provide:

Primary Series
  • a 3-dose primary series to individuals 6 months through 4 years of age
  • a 2-dose primary series to individuals 5 years through 11 years of age
  • a 2-dose primary series to individuals 12 years of age and older
  • a third primary series dose to individuals 5 years of age and older with certain kinds of immunocompromise
Booster Series
  • a single booster dose to individuals 5 through 11 years of age who have completed a primary series with Pfizer-BioNTech COVID-19 Vaccine
  • a first booster dose to individuals 12 years of age and older who have completed a primary series with Pfizer-BioNTech COVID-19 Vaccine or COMIRNATY® (COVID-19 Vaccine, mRNA)
  • a first booster dose to individuals 18 years of age and older who have completed primary vaccination with a different authorized or approved COVID-19 vaccine. The booster schedule is based on the labeling information of the vaccine used for the primary series
  • a second booster dose to individuals 50 years of age and older who have received a first booster dose of any authorized or approved COVID-19 vaccine
  • a second booster dose to individuals 12 years of age and older with certain kinds of immunocompromise and who have received a first booster dose of any authorized or approved COVID-19 vaccine
COMIRNATY® INDICATION

COMIRNATY® (COVID-19 Vaccine, mRNA) is a vaccine approved for active immunization to prevent coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in individuals 12 years of age and older.

HOW IS COMIRNATY® GIVEN?

COMIRNATY® is administered as an injection into the muscle as a 2-dose primary series, 3 weeks apart.

COMIRNATY® AUTHORIZED USES

COMIRNATY® (COVID-19 Vaccine, mRNA) is FDA authorized under Emergency Use Authorization (EUA) to provide:

Primary Series
  • a third primary series dose to individuals 12 years of age and older with certain kinds of immunocompromise
Booster Dose
  • a first booster dose to individuals 12 years of age and older who have completed a primary series with Pfizer-BioNTech COVID-19 Vaccine or COMIRNATY®
  • a first booster dose to individuals 18 years of age and older who have completed primary vaccination with another authorized or approved COVID-19 vaccine. The booster schedule is based on the labeling information of the vaccine used for the primary series
  • a second booster dose to individuals 50 years of age and older who have received a first booster dose of any authorized or approved COVID-19 vaccine
  • a second booster dose to individuals 12 years of age and older with certain kinds of immunocompromise and who have received a first booster dose of any authorized or approved COVID-19 vaccine
EMERGENCY USE AUTHORIZATION

Emergency uses of the vaccine have not been approved or licensed by FDA, but have been authorized by FDA, under an Emergency Use Authorization (EUA) to prevent Coronavirus Disease 2019 (COVID-19) for use in individuals 6 months of age and older. The emergency uses are only authorized for the duration of the declaration that circumstances exist justifying the authorization of emergency use of the medical product under Section 564(b)(1) of the FD&C Act unless the declaration is terminated or authorization revoked sooner.

INTERCHANGEABILITY

FDA approved COMIRNATY® (COVID-19 Vaccine, mRNA) and the Pfizer-BioNTech COVID-19 Vaccine FDA authorized for Emergency Use Authorization (EUA) for individuals 12 years of age and older can be used interchangeably by a vaccination provider when prepared according to their respective instructions for use.

The formulations of the Pfizer-BioNTech COVID-19 Vaccine authorized for use in individuals 6 months through 4 years of age, 5 through 11 years of age, and 12 years of age and older are different and should therefore not be used interchangeably.