Viral Outbreak in Southern Indiana Deer Population Leads to 2025 Harvest Restrictions
The Indiana Department of Natural Resources (DNR) has implemented restrictions on the 2025 deer harvest in several southern Indiana counties following a severe outbreak of epizootic hemorrhagic disease (EHD) among local white-tailed deer populations.
The outbreak began during the last weekend of August and persisted into September, a timing that deviates from the state’s typical EHD season, which usually peaks in July, according to Joe Caudell, a DNR deer biologist.
DNR Adjusts Bag Limits to Protect Deer Populations
Due to widespread reports of illness and mortality, the DNR acted swiftly to lower antlerless deer bag limits in seven counties to mitigate the potential population decline associated with both disease and hunting pressure.
- Jennings County: Over 300 suspected EHD cases reported; bag limit reduced from four to two antlerless deer.
- Jackson County: 231 suspected cases; bag limit lowered from four to three.
- Jefferson County: 91 suspected cases; bag limit lowered from four to three.
- Scott County: 71 suspected cases; bag limit lowered from four to three.
- Bartholomew, Martin, and Switzerland Counties: Bag limits reduced from three to two antlerless deer.
These regulatory changes will be in effect for the 2025–2026 hunting season, reflecting an adaptive management approach to balance harvest with population sustainability.
Understanding EHD and Its Impact on Deer
Epizootic hemorrhagic disease is an insect-borne viral infection that circulates annually in white-tailed deer herds across the United States but can cause significant mortality during severe outbreaks.
Warm, dry conditions—such as those experienced this summer in Indiana—are conducive to EHD outbreaks. When water sources become scarce, deer concentrate in limited areas, increasing exposure to midges and gnats, the insect vectors of the disease.
Infected deer typically develop symptoms within a week, including excessive salivation and swelling of facial and neck tissues. Unfortunately, most symptomatic deer succumb rapidly, often within 36 hours, with rare survivors developing immunity.
Wildlife Expert Perspective
Joe Caudell emphasized the urgency of the late-season outbreak, noting that the rapid emergence of EHD left little time for preemptive management actions. “Usually, we adjust bag limits earlier to allow better communication with hunters, but this year’s outbreak was both sudden and severe,” Caudell explained.
Limiting antlerless harvest in affected counties is a critical tactic in wildlife management to prevent excessive population declines. Overharvesting in a year with high disease mortality could result in prolonged recovery times for deer herds.
Overall, the DNR’s response demonstrates a commitment to adaptive management, using disease surveillance data to guide harvest regulations that support the long-term health and stability of Indiana’s white-tailed deer populations.
Additional reporting and sources from: Viral outbreak in deer population prompts DNR to restrict 2025 harvest in southern Indiana
