COVID-19 Vaccine Booster Dose Booster doses of Pfizer-BioNTech COVID-19 vaccine are available to eligible Rhode Islanders as of Friday, September 24. This follows CDC’s recommendation to make booster doses of Pfizer vaccine available to certain people. For more information on eligibility, please see https://covid.ri.gov/boosterdoses. People who are eligible should get their booster doses at least six months after their second dose of Pfizer. We expect demand for Pfizer vaccine to be high through October given our very high vaccination rates. We encourage everyone to make an appointment to get vaccinated when possible. This will help Rhode Island be able to administer vaccines quickly and efficiently. You can find appointments at any of the options listed at C19VaccineRI.org. If you need help making an appointment, please call 844-930-1779 or 2-1-1.