Illinois resident suspected of hantavirus infection tested negative for illness

May 18, 2026 - 19:17

State health officials have confirmed that an Illinois resident suspected of having hantavirus has tested negative for the illness. The announcement came after a period of heightened caution, during which public health authorities investigated the potential case. Officials from the Illinois Department of Public Health emphasized that the risk of hantavirus spreading within the state remains very low. Hantavirus is a rare but serious disease typically transmitted through contact with infected rodents, particularly deer mice. The negative test result brings relief to local communities, though health experts continue to advise basic precautions. These include sealing up holes in homes to prevent rodent entry, keeping food in rodent-proof containers, and cleaning up rodent nests or droppings with proper protective gear. The virus is not known to spread from person to person, and cases in the Midwest are uncommon. While the investigation is now closed, state officials remind residents that vigilance around wild rodents is always wise, especially in rural or wooded areas. The Illinois Department of Public Health will continue to monitor for any unusual disease activity.