Michigan

Bovine tuberculosis control changes dramatically depending on where the disease survives. Canada’s recent investigations have focused on tracing rare infections through cattle movements, while Michigan’s long-running battle centers on managing the disease in white-tailed deer.

The affected herd is located in Charlevoix County, located west of Michigan’s Modified Accredited Zone (MAZ), where the disease is known to be present in the state’s white-tailed deer population. The detection follows identification of bovine TB in an adult cow at a USDA Food Safety Inspection Service-inspected processing plant.

Native to east Asia, the ALHT was first detected in New Jersey in 2017. Since then, it has spread to more than 20 states with recent confirmations in Illinois, Michigan and Iowa.