Mass.gov offers very easy to read information on the most commonly asked questions regarding the COVID boosters, who is eligible and where to get them. COVID-19 booster frequently asked questions. They even offer an online survey to quickly determine when you are eligible.

The timeline for receiving a third dose, also referred to as a booster, of the COVID-19 vaccine, differs according to the manufacturer (Pfizer, Moderna, and Johnson & Johnson.) Below is information on who currently eligible to receive a booster as of  9/27/2021, broken out by each vaccine manufacturer.

Who can get a booster shot of the Pfizer vaccine?

Following guidance released on September 22, 2021 from the U.S. Food and Drug Administration (FDA) and from the Centers for Disease Control and Prevention (CDC), The Baker-Polito administration has announced that Massachusetts residents will be able to receive Pfizer COVID-19 booster doses from more than 460 locations, including over 450 retail pharmacies. Some locations have appointments available now for booking and additional appointments are expected to come online in the coming days.

The following individuals are eligible for the Pfizer COVID-19 booster at least six months after their second dose:

• Individuals 65 years of age and older.
• Individuals 18-64 years of age at risk for severe COVID-19 due to certain underlying medical conditions as defined by the CDC.
• Individuals 18-64 years of age who are at increased risk for COVID-19 because of occupation or institutional settings.

Is a booster shot for the Moderna vaccine available?

On August 12, 2021, the FDA amended the emergency use authorizations (EUAs) for the Moderna COVID-19 Vaccine to allow for the use of an additional dose in certain immunocompromised individuals:

• Solid organ transplant recipients
• Those who are diagnosed with conditions that are considered to have an equivalent level of immunocompromise

A date for approving a third dose for older adults or other demographical groups has not been established as of 9/24/2021.

Can I get an additional COVID-19 shot if I received the Johnson & Johnson vaccine?

As of September 23, 2021, data is still emerging as to whether an additional dose is necessary for individuals who received the Johnson & Johnson COVID-19 vaccine. This is due to less individuals receiving the J&J vaccine as compared to Pfizer and Moderna. J&J is actively submitting data to be reviewed by the FDA, once this occurs, the FDA may prioritize boosters or second doses of the J&J viral vector vaccine for some people more at risk for severe COVID-19, similar to FDA authorization for third doses of mRNA vaccines. But presently, there is no further information available.