Skip to main content

State Veterinarian Statement on Oscoda County Bovine Tuberculosis Positive Herd

LANSING, MI — Today, State Veterinarian Nora Wineland, DVM, released the following statement due to the discovery of a bovine tuberculosis (TB) positive herd in Oscoda County:

"Bovine TB was recently confirmed in an Oscoda County dairy herd, located in Michigan’s Modified Accredited Zone (MAZ). On January 25, 2022, the National Veterinary Services Laboratories confirmed the presence of the disease in one of the animals from this herd.

As with all findings of bovine TB in a cattle herd, additional testing will be done to ensure the remaining animals are healthy; and if any other infected animals are present, they will be removed.

An epidemiologic investigation is being conducted to help determine the source of infection and rule out the possibility of additional cases stemming from the affected herd."

Bovine TB is a bacterial disease that can affect all mammals, including humans. It is known to be present in the free-ranging white-tailed deer population of the MAZ, a four-county area (Alcona, Alpena, Montmorency, and Oscoda) in northeastern lower Michigan; and the disease can be transmitted between deer and cattle. While state and federal agencies are taking significant steps to manage the disease, the continued hunting of deer in this area is an important tool in maintaining a healthy deer population.

The Oscoda County herd is Michigan’s 82nd cattle herd to be identified with bovine TB since 1998.

More information about bovine TB can be found at