What are Common Deer Diseases in Massachusetts?

Deer Diseases Affecting Massachusetts

Chronic Wasting Disease (CWD)

CWD is a fatal neurological disease affecting deer and other cervids. It’s a significant concern in Massachusetts, as it can be transmitted through direct contact with an infected animal’s body fluids or contaminated soil. To detect CWD, Massachusetts Division of Fisheries and Wildlife (MassWildlife) requires deer harvested in certain areas to be submitted for testing. For the 2022-2023 hunting season, at least 10,000 deer were tested for CWD.

Epizootic Hemorrhagic Disease (EHD)

EHD is a viral disease that affects deer and white-tailed deer are particularly susceptible. It’s transmitted through the bite of infected midges (small biting flies). EHD symptoms include fever, hemorrhaging, and death. In Massachusetts, EHD outbreaks are typically seasonal, peaking in late summer and early fall.

Bovine Tuberculosis (bTB)

bTB is a bacterial disease that primarily affects cattle but can also infect white-tailed deer. It’s transmitted through contact with infected animals or contaminated environments. In Massachusetts, surveillance for bTB involves testing cattle and deer, as well as monitoring for infected animals in the wild. While bTB has not been detected in wild deer populations in the state, it remains a concern due to the risk of transmission from infected cattle.