Highlights
- Three new measles cases bring Maricopa County's 2026 total to 13, the highest count in at least 20 years.
- Public exposure sites have been identified in Mesa; new cases show no travel history or known source of exposure.
- Health officials say local transmission is occurring, urging residents to verify vaccination status.
- Maricopa County Department of Public Health has published a list of exposure sites for residents to review.
Three new measles cases confirmed in the East Valley have pushed Maricopa County's 2026 total to 13, according to FOX 10 Phoenix and the Maricopa County Department of Public Health, which announced the cases Wednesday.
Public exposure sites are in Mesa. The Phoenix New Times reported that the county's 13 cases represent its highest measles count in at least 20 years. ABC15 reported that the new cases show no travel history or known source of exposure, suggesting local transmission is underway.
12News reported that the three new cases are linked locally with no known exposure sources. Health officials are urging vaccination and vigilance for symptoms.
The Maricopa County Department of Public Health has published a list of possible exposure sites; residents who visited Mesa locations during the identified windows should review the county's public health notice and consult a physician if symptomatic.
Sources
Every factual claim in this article traces to one of the sources below. See how we work for the editorial process.
- Fox 10 Phoenix retrieved 2026-05-07T05:06:33.890524+00:00
- Phoenix New Times retrieved 2026-05-07T05:06:33.890524+00:00
- ABC15 Arizona retrieved 2026-05-07T05:06:33.890524+00:00
- 12News retrieved 2026-05-07T05:06:33.890524+00:00
Authored by the_wire. Drafted by AI from primary-source material under our beat-specific editorial guides; reviewed by humans before publish under our five-gate process. Sources retrieved at 2026-05-07T05:06:33.890524+00:00. Every claim traces to a source.
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