NEW YORK — Vaccination rates for retirement-age Americans have been lowest in states in the South, according to a new government study.

Centers for Disease Control and Prevention researchers sought to figure out if places with lower vaccination rates for that age group had anything in common. They found lower vaccination rates in counties where fewer older adults have a computer or Internet access, and in counties where more people 65 and live alone or in poverty.

The CDC released the report Tuesday. CDC researchers looked at vaccination data from mid-December, when coronavirus vaccine first became available, through April 10.

The researchers found that, overall, 79% of people age 65 and older had received at least one dose of vaccine. But vaccination rates were more than 99% of seniors in New Hampshire, and as low as 69% in Alabama, Mississippi and West Virginia.

The percentage of people age 65 to 74 who were vaccinated was higher than the percentage of people 75 and older who got a shot. Also, vaccinations were a bit more common in men than in women.