COVID-19 Vaccine Eligibility br Opens to All US Citizens.br All adults in the United States br and Puerto Rico are now eligible br to receive the COVID-19 vaccine.br Hawaii, Massachusetts, New Jersey, Oregon, br Rhode Island and Vermont were the final states br to open up eligibility on Monday.br President Joe Biden had br initially set May 1 as the br deadline for all adults br to become eligible, .br but moved the date up to April 19 br as vaccinations accelerated.