Overview
- Health officials say the exposure involved a person who does not live in Maricopa County.
- Potential exposure windows were Jan. 5–7 from 6:30 p.m. to 11:30 p.m. and Jan. 8–9 from 3:00 p.m. to 11:30 p.m.
- The alert comes a day after the county reported its first measles case of 2026, with local reporting noting the adult had recently been overseas and was hospitalized.
- Measles can spread through the air or direct contact and typically causes fever, cough, runny nose, red watery eyes, diarrhea, and a rash that begins at the hairline and moves downward, with symptoms appearing 7–14 days after exposure and up to 21 days.
- People who develop symptoms are urged to call a healthcare provider before seeking care, and two doses of the MMR vaccine offer strong protection.