Four Measles Cases Reported in Navajo County: Arizona's First in 2025

Four Measles Cases Reported in Navajo County: Arizona’s First in 2025

Unvaccinated individuals recently traveled abroad; health officials urge public to monitor symptoms and avoid contact

PHOENIX — Health officials in Navajo County confirmed the first measles cases in Arizona for 2025, with four individuals testing positive for the virus, according to an announcement made on Monday.

The Navajo County Public Health Services District (NCPHSD) reported that all four individuals live in the county and had not been vaccinated against measles. They had also recently returned from international travel. Officials believe the infections stem from a single exposure source and estimate the risk period lasted from May 17 to May 28.

Efforts are underway to determine the exact origin of exposure and to notify those who may have come into contact with the infected individuals.

“Our team is collaborating closely with the Arizona Department of Health Services to track these cases and manage any new ones that may emerge,” said Janelle Linn, director of NCPHSD.

Health officials are encouraging anyone who believes they may have been exposed or who begins experiencing symptoms such as a fever, cough, red or watery eyes, runny nose, or a rash to reach out to their healthcare provider immediately for evaluation and testing.

Individuals who may have been exposed should monitor themselves for 21 days, self-isolate, and avoid public settings during that period. Medical facilities request that patients call ahead before arriving in person, to help prevent further spread.

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