COVID-19 Vaccine Update

Last updated January 3, 2022

COVID-19 Booster

Since October 18th Nantucket Cottage Hospital has been offering booster shots of Pfizer and Moderna’s COVID-19 vaccine. Boosters are by appointment only and can be made online at

Appointments are seen at the COVID-19 Vaccination Clinic on the second level of Nantucket Cottage Hospital, in the Watkins Conference Room.

Outside of Nantucket Cottage Hospital, boosters are also being offered locally by Health Imperatives and Dan’s Pharmacy.

Third-Dose For Immunocompromised Patients 

Evidence continues to demonstrate that the COVID-19 vaccinations offered here on Nantucket (Pfizer, Moderna and Johnson and Johnson) are remarkably effective for reducing risk of serious illness caused by COVID-19. While effective, the immunocompromised population is still vulnerable to COVID-19 because of their high-risk status for serious, prolonged illness and weakened immune systems.

The CDC recommends people who are moderately or severely immunocompromised should consider and consult with their healthcare provider on receiving a third-dose of their mRNA COVID-19 vaccine, in the month following the completion of the initial two-dose series.

It should be noted, that this CDC recommended third dose is not a booster dose, which is given to individuals when their immune response to the initial two-dose series has decreased. This third dose is a continuation of the two-dose series and is intended to help improve an immunocompromised individual’s response to their original two-dose series. The major difference between these two doses is the prescribed time between doses, the third-dose is recommended for about a month following the end of the two-dose series, whereas the booster is recommended at least 6-months following the end of the two-dose series.

Replacement Vaccination Cards: NCH provides replacement vaccination cards for individuals that received their COVID-19 vaccine through NCH or the VFW Clinic. Please call 508-825-1000 if you need a replacement.

About the COVID-19 vaccines

Read frequently asked questions about the COVID-19 vaccines by clicking here. 

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