As of March 14, 2024, a total of 58 measles infections were reported by 17 states: Arizona, California, Florida, Georgia, Illinois, Indiana, Louisiana, Maryland, Michigan, Minnesota, Missouri, New Jersey, New York, Ohio, Pennsylvania, Virginia, and Washington. In the entire year of 2023, there were 58 Measles infections in the United States. Why is this important? Measles is one of the most contagious illnesses that we know of. It is so easily spread, that for every group of 100 unvaccinated people exposed to measles, 90 will become infected.