Provisional — subject to revision
General Motors Cole Engineering Center, Global Technical Center, Warren, MI
Legionnaires’ disease outbreak · Sep 2025 · Michigan
- 2
- Cases
- 0
- Deaths
- Under Investigation
- Status
Suspected source
building water system at an industrial/office campus (Municipal water)
What happened
Two employees who worked at General Motors' Cole Engineering Center at the Global Technical Center in Warren, Michigan tested positive for Legionnaires' disease in September 2025. The Macomb County Health Department was notified and GM closed the building, which houses about 10,000 workers, while a third-party firm tested the building's water systems. GM has not confirmed the building as the source of exposure. Figures are provisional.
Sources & coverage
- Legionnaires’ Disease Outbreak at General Motors Michigan Facility: What Victims Should Know(Pritzker Hageman)
- HC Info: Recent outbreaks(HC Info)
- Legionnaires' disease cases prompt GM to close Warren building(Automotive News)
- General Motors closes Michigan facility over Legionnaires disease(CBS News Detroit)
Were you exposed in Warren, Michigan?
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Primary source: building water system at an industrial/office campus. Figures are provisional and may be revised or withdrawn by the reporting authority. This page is for information only and is not medical or legal advice.