Illinois Department of Public Health (IDPH) has confirmed the first case of measles in the state for 2025, involving an adult in far southern Illinois. The case was verified through laboratory testing, according to a press release issued Wednesday afternoon.
This is currently the only confirmed case in Illinois. Health officials emphasized that this does not constitute an outbreak at this time. The IDPH will provide updates should there be any significant developments.
The department is actively working to identify potential exposure sites, including a clinic in southern Illinois where the patient sought care. Public health workers involved in the case are wearing masks and are considered immune, the release noted.
Since an outbreak in Chicago early this year, which resulted in 67 cases, Illinois has not reported any additional cases. Nationally, the Centers for Disease Control and Prevention (CDC) reports 800 confirmed measles cases across 25 jurisdictions, including states such as California, New York, Texas, and Florida. These numbers were last updated last week.
The CDC also reports ongoing outbreaks in New Mexico and Texas, which have led to three deaths, including two children.
IDPH Director Dr. Sameer Vohra reminded residents that measles is preventable through vaccination. “This first case in Illinois in 2025
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