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Media contact: *Courtney Kreuzwiesner, 602-540-5473, c.kreuzwiesner@maricopa.gov

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Public Health Confirms First Measles Case of the Year in Maricopa County

"* Case linked to international travel; residents urged to stay alert amid ongoing statewide measles spread*"






PHOENIX (January 15, 2026)—Maricopa County Department of Public Health (MCDPH) has confirmed a case of measles in an adult who resides in Maricopa County. The case was associated with overseas international travel and required hospitalization. The individual was not infectious at the time of travel.

MCDPH is coordinating with partner agencies to notify individuals who have been identified as potentially being exposed. “While the overall risk to the community remains low, it’s important residents remain vigilant given the ongoing spread of measles across our state [ https://www.azdhs.gov/preparedness/epidemiology-disease-control/measles/index.php ] and beyond,” said Dr. Nick Staab, Chief Medical Officer for MCDPH. “Measles is one of the most contagious diseases we see, but it is also highly preventable. The MMR vaccine is a proven way to protect yourself, your family, and our community.”

Vaccination is the most effective protection. Two doses of the MMR (measles, mumps, rubella) vaccine are 97% effective and recommended for all children. Unimmunized adults are recommended to receive at least one dose of MMR vaccine. Individuals born before 1957 or who had measles as a child are generally considered immune. 

Measles spreads through direct contact with an infected person or through the air when an infected person coughs or sneezes. The virus can remain infectious in the air and on surfaces for up to 2 hours after an infected person leaves an area. A person with measles can spread the virus to others before symptoms begin. 

Symptoms typically appear about 7-14 days after exposure and can include a high fever (104 °F to 105.8 °F), cough, runny nose, diarrhea and red, watery eyes, and a full-body rash that usually starts a few days after the fever. Measles can cause serious illness and death, especially in young children, pregnant women, and people with depressed immune systems.

Anyone who develops symptoms consistent with measles should self-isolate, avoid contact with others, and seek medical care. People with symptoms should call their healthcare provider or medical facility *before* arriving so staff can provide instructions to reduce the risk of exposing others.

MCDPH is also urging healthcare providers to be alert for patients with fever and rash, especially those who are unvaccinated or report a known exposure. Suspected measles cases must be reported to the local health department.

*Measles Facts*

* Vaccination is the most effective way to avoid measles infection and serious outcomes. 
* Unvaccinated people have a 90% chance of becoming infected if exposed.
* Vitamin A does not prevent measles.
* In the rare case where a vaccinated person gets infected with measles, their illness will be less severe than if they were unvaccinated.

* There is no treatment for measles, and it can have serious outcomes.
* An individual with measles can get supportive care, but there are no treatments to relieve symptoms or shorten duration of infection. 
* While less common, measles can result in death.

* Measles is highly contagious.
* People who are infected can spread measles to others before symptoms develop, while they still feel normal.

* Residents can check their immunization records to see if they are up to date on MMR and other vaccines.
* Residents can visit myIR [ https://www.azdhs.gov/preparedness/epidemiology-disease-control/immunization/azmyir/index.php ] via the Arizona Department of Health Services.
* Assistance is also available through the MCDPH CARES Team at 602-506-6767.
* If you do not have the recommended doses of MMR vaccine or are unsure if you do, talk with your healthcare provider about next steps.

For more information on measles, visit Maricopa.gov/measles [ https://maricopa.gov/measles ].






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