Governor Baker announced the dates that all remaining residents and certain worker groups will be eligible for a vaccine. The Commonwealth’s detailed timeline adheres to the original timeline for the three phases announced in December. All residents can pre-register to book an appointment at a mass vaccination site at Appointments will be offered based on eligibility and available appointments nearby. It is expected that more sites will come online as part of the pre-registration process in April.

Timeline for remaining groups:

The full timeline is available at The Administration has received assurances from the federal government that an increased vaccine supply will be available to states soon. Depending on supply, it could take weeks for people to be notified that an appointment is available at a mass vaccination site.