Based on sustained COVID-19 community transmission rates, Maine CDC has concluded that all individuals are at high risk for COVID-19 exposure. Accordingly, effective immediately, all Mainers age 18 years or older who received the Pfizer or Moderna vaccine are eligible for a booster dose at least six months after the second dose of their primary series. Those who received the single-dose J&J vaccine remain eligible for a booster dose at least two months after their initial dose.