Important notice


Mass General Brigham is offering appointments for first-dose vaccine for patients 5 years and older, as well as Pfizer COVID-19 booster shots to patients who are eligible per the CDC’s recommendation and who have completed their Pfizer/Comirnaty primary series at least 6 months ago.


We also have community vans that offer free COVID-19 vaccines on select days and times; no appointment needed.


Vaccine availability and scheduling

  • Where can I get a COVID-19 vaccine?

    Given our successful efforts to date and the increasing rates of vaccination in the community, we have reduced the number of our vaccination clinics. We schedule first-dose vaccine for patients 5 years and older on a limited basis. Visit our scheduling website to schedule an appointment. 

    community care van

    We also have community vans that offer free COVID-19 vaccines on select days and times; no appointment needed. Please view the schedule for when we will be in your neighborhood.

    View our mobile van schedule
    In Massachusetts, you can also visit the website to find vaccine appointments near you or dial 2-1-1.

    In New Hampshire you can visit to find a location near you. Or you can search, text your zip code to 438829 or call 1-800-232-0233 to find a location.

  • I got my first dose at another hospital or a location outside of Mass General Brigham. Can I get my second dose with Mass General Brigham?

    No, we do not schedule second-dose appointments unless you have already received your first dose at a Mass General Brigham location. We strongly advise that patients book their second dose at the same location where they received their first dose.

    The Pfizer/Comirnaty and Moderna vaccine each requires two doses. The Johnson & Johnson (Janssen) vaccine requires only one dose.

  • I am eligible for a third dose or a booster, and I got my first two doses at a location outside of Mass General Brigham. Can I get my next dose at Mass General Brigham?

    If you received your first and second vaccine doses outside of Mass General Brigham, you can get your third dose or booster at a Mass General Brigham vaccine siteVisit our scheduling website to schedule an appointment. Please bring your vaccine card to your appointment.

  • What is the difference between a third dose and a booster?

    A booster shot and a third dose are not the same. A third dose is recommended for people who received either Pfizer/Comirnaty or Moderna vaccines and have compromised immune systems. It is recommended that patients with compromised immune systems receive a third dose to increase their level of protection from the virus. This third dose completes these patients’ primary vaccine series.

    A booster is an extra dose of vaccine meant to boost a patient’s immune system because of decreased immunity over time. To find out if you qualify for either a third dose or a booster, read the questions “Do I need a third dose of the Pfizer/Comirnaty or Moderna vaccine?” and “Do I need a booster?”

  • Do I need a third dose of the Pfizer/Comirnaty or Moderna vaccine?

    The CDC now recommends a third dose for certain people who got the Pfizer/Comirnaty or Moderna COVID-19 vaccine to complete their initial series of 2 doses.

    People who are moderately to severely immunocompromised should get another dose. These are people who:

    • Are actively being treated for cancer
    • Have received a solid organ transplant and are taking medicine to suppress the immune system
    • Have received CAR-T cell therapy
    • Have received a stem cell transplant within in the last 2 years or are taking medicine to suppress the immune system after a stem cell transplant
    • Have moderate or severe primary immunodeficiency (including all patients receiving IVIg or SCIg due to an underlying immune deficiency; patients with other underlying immune deficiencies not receiving IgG replacement can be counseled on a case-by-case basis)
    • Have advanced (generally defined as a CD4 count of less than 200 or CD4 percentage of 14 or less) or untreated HIV infection
    • Are taking high-dose corticosteroids (i.e. the equivalent of 20 or more milligrams of Prednisone a day)
    • Are getting other drugs that may suppress the immune response (i.e., tumor-necrosis blockers or other biologic agents that are immunosuppressive or immunomodulatory)

    The CDC also allows patients who are moderately to severely immunocompromised to receive a booster 6 months after their third dose of either Pfizer/Comirnaty or Moderna. Patients who received their third dose when they became available in August 2021 would not be eligible to receive a booster until February 2022 at the earliest.

  • Do I need a booster?

    The CDC is also recommending booster shots for certain people who received the Pfizer/Comirnaty or Moderna vaccines, and for anyone who received the Johnson & Johnson vaccine.

    Any person who received the Johnson & Johnson vaccine is eligible for a booster. If you received this vaccine, you should get your booster at least 2 months after your original dose.

    For those who received the Pfizer/Comirnaty or the Moderna vaccines, boosters are recommended 6months after the second dose for:

    Other people who received the Pfizer or Moderna vaccines who may consider a booster shot 6 months after receiving their second dose include:

    • People ages 18-49 years with certain medical conditions
    • People ages 18-64 years who are at increased risk for COVID-19 because of where they live or work

    You should get your booster at least 6 months after your second dose.

    If you do not meet the requirements for a third dose or a booster and are fully vaccinated, there is nothing else you need to do.

  • Should my booster be the same vaccine I received initially, or can I “mix and match”?

    The CDC’s recommendations now allow for patients to receive a different booster than their original vaccine. You may choose which vaccine you receive as a booster dose.

  • How can I find out which vaccine I will be receiving at my upcoming vaccination appointment?

    The best vaccine is the one that is available to you on the day of your appointment. Mass General Brigham’s vaccine supply is provided by the state and federal government. Although we do not choose which vaccines we get in our distribution, we have primarily been administering Pfizer/Comirnaty vaccines at our vaccination clinics. 

    Please note: Patients aged 5 to 17 will receive the Pfizer/Comirnaty COVID-19 vaccine because it is currently authorized for this age group. 

  • I misplaced my COVID-19 vaccination card. Can I replace it?

    While we cannot replace the physical CDC vaccination card, patients who were vaccinated at a Mass General Brigham location can receive their immunization history through Patient Gateway.

    If you are not a current patient registered in Patient Gateway, you can request a hard copy of your vaccination record through Mass General Brigham’s Health Information Management (HIM) Department. You will need to complete an authorization form for release of protected health information. The completed form may be faxed or mailed, and instructions are included in top right corner of the form.

    If you were vaccinated outside of the Mass General Brigham system, you will need request a copy of your vaccination information from the original provider (e.g., CVS, Walgreens).

    The Massachusetts Department of Public Health provides additional guidance on how to replace your card.

What to expect from a COVID-19 vaccine appointment

Read frequently asked questions about what to expect when getting the COVID-19 vaccine, including information about potential side effects.

Frequently Asked Questions about what to expect from vaccination

FAQs about the vaccines

Video: Answers to the most searched questions about COVID-19 vaccines

Are COVID-19 vaccines safe? What types of vaccines are available? What should I do to protect myself from COVID-19? Daniel R. Kuritzkes, M.D., answers patients' most commonly searched questions about COVID-19 vaccines.

Where can I find more information?

View more videos from Mass General Brigham

Get up-to-date vaccine information

Vaccine emails from Patient Gateway

Patient Gateway

Patient Gateway is a convenient, secure way to manage your health and communicate with your doctor's office. We are sending regular updates about the COVID-19 vaccine to all enrolled in Patient Gateway.

What is Patient Gateway

Updated November 4, 2021