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abstractpubmed· Abstract 2020· item PMID:32568061

Heartland Virus in Humans and Ticks, Illinois, USA, 2018-2019. In 2018, Heartland disease virus infected 2 persons in Illinois, USA. In 2019, ticks were collected at potential tick bite exposure locations and tested for Heartland and Bourbon viruses. A Heartland virus-positive pool of adult male Amblyomma americanum ticks was found at 2 locations, 439 km apart, suggesting widespread distribution in Illinois.