Maricopa County Confirms Sixth Measles Case of 2026

Health officials identify new exposure sites in Mesa and Queen Creek

Apr. 16, 2026 at 11:08pm

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A translucent, ghostly X-ray photograph revealing the intricate internal structure of a measles virus particle, glowing in shades of blue and purple against a dark background.An X-ray view of the measles virus, a highly contagious pathogen that has prompted new public health alerts in Maricopa County.Mesa Today

The Maricopa County Department of Public Health has confirmed a sixth case of measles in the county so far this year. The new case is not linked to any previous cases and has no known source of exposure. Health officials have identified several public exposure sites in Mesa and Queen Creek where people may have been exposed to the measles virus.

Why it matters

Measles is a highly contagious viral disease that can lead to serious complications, especially in young children. The identification of new exposure sites is important to alert the public and encourage vaccination to prevent the further spread of the disease.

The details

The new measles case was confirmed on Thursday, marking the sixth case in Maricopa County in 2026. Health officials say the case is not linked to any previous cases and has no known source of exposure. They have identified several public exposure sites in Mesa and Queen Creek, including a basketball game, a Costco, a Walmart, and a church event. The measles virus can survive in the air for up to two hours, so anyone who visited these locations during the listed times may have been exposed and should watch for symptoms.

  • The new measles case was confirmed on Thursday, April 16, 2026.
  • The exposure sites were visited between April 3 and April 11, 2026.
  • Individuals should watch for symptoms through April 25 to May 2, 2026, depending on the exposure site.

The players

Maricopa County Department of Public Health

The local public health department that confirmed the new measles case and identified the exposure sites.

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What’s next

Health officials urge anyone who visited the identified exposure sites during the listed times to check their vaccination status and watch for symptoms. If symptoms develop, individuals should stay home and call a healthcare provider before seeking medical care and testing.

The takeaway

The identification of new measles exposure sites in Maricopa County highlights the importance of vaccination and vigilance in preventing the spread of this highly contagious disease. The public is encouraged to stay informed, monitor for symptoms, and seek medical attention if necessary.