Particle.news
Download on the App Store
9 ARTICLES
·
3w ago

Measles Case in Unvaccinated 4-Year-Old Confirmed in Suburban Cook County, O'Hare Terminal 5 Exposure Listed

Officials urge travelers to verify MMR protection.

Image
A vial of the measles, mumps and rubella (MMR) vaccine with a sterile water diluent and needle at International Community Health Services, Sept. 10, 2025, in Seattle. (Lindsey Wasson/AP)
Image
Image

Overview

  • Health authorities say the child likely contracted measles during international travel, with a public exposure window at O'Hare Terminal 5 on Sept. 11 from about 7:30 to 11 a.m.
  • The Cook County Department of Public Health is working with Illinois and Chicago health departments to identify and notify people who may have been exposed.
  • People unsure of their measles vaccination status should contact their health care provider, and anyone with symptoms is advised to call before seeking in-person care to prevent further exposure.
  • Two doses of the MMR vaccine are about 97% effective, and receiving MMR after potential exposure is not harmful and may help prevent illness.
  • This case comes during a broader U.S. surge with 1,454 confirmed cases and three deaths this year, and local agencies including CDPH and Cook County Health are offering MMR vaccination options.