The Illinois Department of Public Health is investigating a potential hantavirus case in Winnebago County, Illinois, that is not linked to the recent cruise ship outbreak. The resident, who had no international travel history, is believed to have contracted the virus while cleaning a home with rodent droppings. The individual is recovering from mild symptoms and did not require hospitalization.
The U.S. Centers for Disease Control and Prevention (CDC) is conducting additional tests to confirm the hantavirus case. The Illinois Department of Public Health stated that the suspected strain is the North American hantavirus, which is not spread from person to person. Health officials emphasize that the risk of contracting hantavirus remains very low for Illinois residents. Since 1993, Illinois has recorded seven hantavirus cases, with the most recent in March 2025
This strain differs from the Andes strain responsible for the outbreak on the MV Hondius cruise ship, where three passengers died and several others were sickened.
Currently, 16 American passengers from the MV Hondius are being monitored and quarantined in Nebraska. The Nebraska Medicine facilities, including the National Quarantine Unit and the Nebraska Biocontainment Unit, are providing care. The Andes strain, involved in the cruise outbreak, can spread from person to person but requires prolonged close contact.
The Illinois Department of Public Health continues to work with the CDC to confirm the Winnebago County case, with results expected in up to 10 days. Officials urge residents to rely on verified information from public health agencies and remain cautious of misinformation.
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