Massachusetts and the District of Columbia reported the highest flu vaccination rates among U.S. states last season, according to an analysis from KFF.
About 62% of residents in both Massachusetts and the nation's capital were vaccinated against the flu, exceeding the national average of 47.2%. In contrast, Mississippi recorded the lowest flu vaccination rate at 33.7%.
For its report, KFF analyzed CDC data on flu vaccination rates for individuals 6 months and older during the 2023-24 flu season.