Maricopa County reports 7 new measles cases, bringing total to 21

Maricopa County health officials reported seven new measles cases Friday, bringing the county’s total of confirmed infections to 21.

That is far above the county’s usual average of one case per year over the past 30 years, according to the Maricopa County Department of Public Health.

Health officials also identified two new public exposure sites in Surprise and Tempe. Anyone who was at either location during the listed times should watch for symptoms.

Public exposure sites tied to new measles cases

The first exposure site is Tempe Marketplace, located at 2000 E. Rio Salado Parkway. The possible exposure happened July 6 from 5 p.m. to 8:30 p.m. Anyone who was there during that time should watch for symptoms through Monday, July 27.

The second exposure site is the Walmart at 13770 W. Bell Road in Surprise. The possible exposure happened Sunday, July 12, from 2 p.m. to 5 p.m. Anyone who was there during that time should watch for symptoms through Sunday, Aug. 2.

Because the measles virus can remain in the air for up to two hours after an infected person leaves, health officials said people who were at those locations during the exposure windows should take precautions and monitor for symptoms.

How to tell if you have measles

Measles symptoms can include a fever of more than 101 degrees, red or watery eyes, a cough, a runny nose and a red, raised, blotchy rash. The rash typically appears after other symptoms, starting on the face near the hairline before spreading down the body.

About 90% of unvaccinated people who are exposed will become infected, officials said.

People who may have been exposed are urged to contact a health care provider before seeking in-person care to avoid spreading the virus.

Arizona health officials logged 220 measles cases in 2025.

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