MESA, AZ — Public health officials in Maricopa County say they are confronting the most significant measles outbreak the region has seen in 30 years, with 15 confirmed cases so far in 2026. This includes eleven potential exposures tied to a recent outbreak traced back to exposures beginning April 23.
Two key exposure events took place at the Arizona Athletic Grounds in southeast Mesa, one on April 23 and another spanning May 5-7, according to the county health department. Officials have posted a complete list of exposure locations on their website for residents to review.
Measles is considered highly contagious, often beginning with symptoms such as high fever, cough, runny nose, and watery eyes before progressing to its distinctive rash…