MARSHALL COUNTY, Iowa (KWWL) — The Iowa Department of Health and Human Services has confirmed 18 cases of Legionnaires' disease in Marshall County.

Legionnaires' disease is a severe form of pneumonia typically contracted by inhaling contaminated water or mist. Symptoms include fever, cough, headache, shortness of breath, and chest pain, and may be fatal if not treated.

No specific information has been released regarding those diagnosed in Marshall County.

The department is collaborating with local and federal partners to monitor and support the ongoing investigation into the outbreak.

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