Third Iowa Horse Confirmed Positive for West Nile Virus in 2019
The Mitchell County mare died on Aug. 13.
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The Iowa Department of Agriculture confirmed on Aug. 13 that a 3-year-old Standardbred mare died of West Nile virus (WNV) in Mitchell County, Iowa. | Photo: Wikimedia Commons
The first two cases of WNV in Iowa horses this year occurred in Davis and Union counties in south-central Iowa in late June. Mitchell County is in northeastern Iowa.
West Nile virus transmission occurs when infected mosquitoes feed on animals, as well as humans, after having fed on infected birds.

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