Wisconsin DNR monitors rising deer deaths from epizootic hemorrhagic disease
The Wisconsin Department of Natural Resources reports a surge in deer mortality linked to epizootic hemorrhagic disease, with 600 dead-deer reports received by early August and cases confirmed in multiple counties.
The Wisconsin Department of Natural Resources (DNR) said it is tracking an increase in deer deaths attributed to epizootic hemorrhagic disease (EHD). The agency confirmed an outbreak in wild deer in Washington County and noted suspect cases in northern Waukesha and Ozaukee counties. It has received 100 reports of dead deer through mid-August, rising to 600 reports by the start of the month.
EHD, first identified in Wisconsin in 2002, has become more prevalent since 2012 and now affects 24 counties. The DNR is prioritizing sampling in areas where the virus has not yet been confirmed and urges the public to report unusual deer mortality.
According to the DNR, infected deer may exhibit symptoms such as excessive salivation, foam around the nose, swelling of the head or neck, and unusual tolerance of human presence. They may also be found near water due to high fevers and dehydration. Most cases are confirmed post-mortem.
The department noted that mortality rates vary, typically staying below 25 % in regions where the disease is common, but can be higher in areas with dense deer populations. Officials emphasized that EHD does not pose a risk to human health.