Surveillance Alert: Measles Transmission in Maricopa County 04/09/2026

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ENHANCED SURVEILLANCE ALERT

Maricopa County Department of Public Health (MCDPH)
Public Health Measles Alert for Healthcare Providers: 04/09/2026

Measles Transmission in Maricopa County - Suspect, Isolate, Report, and Vaccinate

Maricopa County Department of Public Health (MCDPH) confirmed a new measles case in a Maricopa County resident not associated with previously confirmed cases in the county and with no known source of exposure, suggesting local transmission in Maricopa County. Healthcare providers should be aware that measles is circulating in our community and should consider measles in the differential of individuals who present with fever and a rash. In alignment with CDC guidance in the setting of a local measles outbreak, MCDPH recommends infants aged 6-11 months to get early MMR vaccination.

MCDPH has identified public locations where people may have been exposed to measles as a result of this case.

Individuals who were at the following locations at the listed dates and times may have been exposed and should watch for symptoms for the 21 days following their exposure:

• Costco, 20260 S. Ellsworth Rd., Queen Creek, AZ 85142
  • April 3^rd from 11:00 a.m.-2:00 p.m. 
  • People should watch for symptoms through April 25^th, 2026.
• Walmart, 21055 E Rittenhouse Rd., Queen Creek, AZ 85142
  • April 4^th from 8:15 a.m.-10:45 a.m.
  • People should watch for symptoms through April 26^th, 2026.
• Generation Church, 22801 Via Del Jardin, Queen Creek, AZ 85142
  • April 5^th from 8:45 a.m.-12:30 p.m.
  • People should watch for symptoms through April 27^th, 2026.

A summary of actions healthcare providers can do to help protect our community can be found at Measles Outbreak Information for Healthcare Providers.

It is recommended that Maricopa County providers:

• Consider measles in the differential of unvaccinated individuals who present with fever and a rash.
• Provide early MMR vaccination to infants 6-11 months in alignment with CDC guidance for jurisdictions with a local measles outbreak.
• Minimize exposures of patients and staff utilizing CDC infection control guidance.
• Make sure that all patients and clinical staff are adequately vaccinated.

Immediately report suspect cases of measles to Maricopa County Department of Public Health by calling (602) 506-3747

 Resources:

• CDC Measles for Healthcare Providers
• CDC Interim Infection Prevention and Control Recommendations for Measles in Healthcare Settings
• Arizona Department of Health Services Health Professionals
• Arizona Department of Public Health Measles Dashboard
• MCDPH Measles Information for Healthcare Providers

Thank you for your continued collaboration and partnership.

Maricopa County Department of Public Health

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