Measles Cases Top 100 in Indiana for 202611/03/2026There have now been 104 cases of measles in Indiana this year, jumping more than 30 cases in just a few days and drawing concern from health officials. According to the Indiana Department of Health, LaGrange County has the most cases of measles in Indiana at 26 while Adams County is second with 17 cases. The best way to protect against measles is through vaccination, and health officials emphasize being up to date on your vaccinations.