COVID-19 vaccinations for children ages 6 months to 4 years old

Children ages 6 months to 4 years old who live in Massachusetts are now able to get the COVID-19 vaccine. The vaccine is safe and effective. You don't need an ID or insurance to get it.

Help protect your whole family by getting everyone vaccinated. Vaccines are now available for individuals 6 months and older. The COVID-19 vaccine has been shown to be safe, effective, and protective against serious illness.

Information on vaccinating people ages 5-17, please visit:

Talk to your child's doctor about COVID-19 vaccines or search for vaccination appointments.

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COVID-19 vaccine authorization timeline

On Saturday, June 18, CDC Director Rochelle P. Walensky endorsed the Advisory Committee on Immunization Practices’ (ACIP) recommendation that all children 6 months to 4 years of age should receive a COVID-19 vaccine. This expands eligibility for vaccination to nearly 20 million additional children and means that all Americans ages 6 months and older are now eligible.

COVID-19 vaccine safety for children

COVID-19 vaccines are safe and effective.

COVID-19 vaccines have been used under the most intensive safety monitoring in U.S. history, which includes studies in children.

Your child can’t get COVID-19 from any vaccine, including the Pfizer-BioNTech and Moderna vaccine.

Each COVID-19 vaccine has its own fact sheet with information to help you understand the risks and benefits of receiving that specific vaccine. See the Moderna vaccine fact sheet here and the Pfizer-BioNTech vaccine fact sheet here.

COVID-19 boosters

People ages 6 months and older are recommended to receive 1 updated (bivalent mRNA) booster dose after completion of any primary series or previously received monovalent booster dose(s) with the following exception: children 6 months–4 years who receive a 3-dose Pfizer-BioNTech primary series are not authorized to receive a booster dose at this time regardless of which Pfizer-BioNTech vaccine (i.e., a monovalent or bivalent) was administered for the third primary series dose. Monovalent mRNA vaccines are not authorized as a booster dose.

For people ages 6 years and older, your booster vaccine does NOT need to be the same as your primary series – “mix & match” is OK.

For people under 6 years of age, the booster vaccine should be the same product as the primary series (if you got a Pfizer primary series, you should get the Pfizer booster; if you got the Moderna primary series, you should get the Moderna booster)

The recommendations can vary based on your age and which product you get. Check with your healthcare provider or vaccine administrator, or find more information at

You can also use this CDC tool to determine when or if you (or your child) can get one or more COVID-19 boosters — Find out when you can get your booster.



Consent for children 6 months to 4 years old

Children ages 6 months to 4 years old can get the Pfizer or Moderna vaccine. 

A legally authorized representative (usually a parent or guardian) must give permission (also called consent) for vaccination of a child 6 months to 4 years of age. This can be done by completing a written consent form that the minor (the person under the age of 18) can bring to their vaccination appointment. 

Please contact the vaccination location for more information on written consent, or download a copy of the consent form below.

Providers are not required to use this form. Providers may continue to follow their regular practice for obtaining consent, including verbal consent, provided all the conditions of the Emergency Use Authorization are met (such as the consenting parent/guardian is provided the fact sheet on the vaccine).


COVID-19 vaccine - safe and effective for children 6 months and older

Messages about COVID-19 vaccination

Young children can become very sick from COVID-19. They can spread the virus. These short, factual messages can help you talk about the COVID-19 vaccine for children 6 months to 4 years old. Learn more about these short, factual talking points from COVID-19 Vaccine Equity Initiative (VEI).

Frequently asked questions

Learn more about why children under 5 should get the COVID-19 vaccine and other frequently asked questions about the COVID-19 vaccine for children 6 months to 4 years.



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