Nearly half of all Connecticut youngsters have received the H1N1 vaccine, more than any other age group in the state and one of the higher rates in the country, according to figures released by the federal Centers for Disease Control and Prevention Thursday.

Still, Connecticut’s swine flu vaccination rates trailed those of other New England states, which posted some of the highest rates in the country, according to estimates based on two different telephone surveys.

The numbers suggest that the vaccine was reaching the people who need it, state Public Health Commissioner Dr. J. Robert Galvin said in a statement.

In Connecticut, 43.2 percent of people aged 6 months to 17 years had received the vaccine by the end of January, higher than the nation’s median rate of 36.8 percent. The other New England states were among the most prolific in vaccination, led by Rhode Island, where 84.7 percent of youngsters were immunized.

Overall, 22.6 percent of Connecticut residents older than 6 months received the vaccine, just below the national median of 23.9 percent.

Adults received the vaccine at lower rates than children and teens. In Connecticut, 33.4 percent of people in the initial target group — pregnant women, health care and emergency medical service workers, those aged 6 months through 24 years and those between 25 and 64 with high-risk medical conditions — got vaccinated, just above the national median, 33.2 percent.

Connecticut fell below the national median for other groups. Among people aged 25 to 64 at high risk, 22.9 percent were vaccinated in Connecticut, while among those in the same age group who were not in the initial target groups for the vaccine, 11.7 percent got it.

Nationwide, swine flu activity remains relatively low, although it has increased in some parts of the country.