The Indiana Department of Health (IDOH) has confirmed six measles cases in Allen County. While health officials are optimistic about containing the spread, vaccination numbers in Indiana are below the national average. Allen County has a current MMR vaccination rate of 60%, well below the statewide average of 84.6% and the national average of 90.8%. Three Indiana counties have MMR immunization rates below 50%: LaGrange (35.9%), Daviess (38.4%) and Martin (43%). 

In 2024, just 68.5% of kids in the U.S. had their first dose of the MMR vaccine by 15 months of age, a significant decline from 77% in 2020. Even that figure was far short of the 95% threshold needed to prevent measles outbreaks. The federal government has set a goal of 95% of kindergarten-age children having received both their first and second doses.

Indiana is among 24 states with measles outbreaks. More than 735 cases have been reported nationwide, the second-worst American outbreak since the disease was declared eliminated in the U.S. in 2000.