Overview
- Health authorities report three confirmed, related measles cases in Washtenaw County, all unvaccinated, traced to an index adult who recently traveled to Florida.
- The health department announced a fourth suspected case linked to the first patient, with laboratory confirmation still pending.
- New potential exposures on March 17 were identified at two Washtenaw Community College classrooms and a Kroger in Ypsilanti, with those present asked to monitor for symptoms for 21 days and call providers before seeking in‑person care.
- High‑risk people exposed at those sites may receive immune globulin for up to six days after exposure, with the window closing Monday, March 23; the 72‑hour period for post‑exposure MMR vaccination has passed for the March 17 exposures.
- Officials note measles can linger in the air for up to two hours and are using detailed contact tracing and outdoor/mobile testing; no dedicated vaccine clinic is planned, but walk‑in MMR vaccination is available and two doses are about 97% effective.