Bovine TB Found in Iosco County Cattle Herd for First Time

Nothing says "Pure Michigan" quite like hearing a disease usually tied to wild deer has now shown up in a cattle herd for the first time in Iosco County. Because apparently the deer weren't busy enough eating your landscaping and playing chicken with your headlights.

The Michigan Department of Agriculture and Rural Development (MDARD) says bovine tuberculosis was discovered after an infected cow was identified at a USDA-inspected processing plant. Investigators traced the animal back to an Iosco County herd, where additional infected cattle were later found.

How Bovine TB Spreads in Michigan

According to MDARD, bovine TB is a bacterial disease that can affect mammals. Yes, that includes humans. The disease has existed for years in parts of northern Lower Michigan's wild whitetail deer population, where deer-to-cattle transmission remains a major concern.

Michigan already has two designated TB zones. The Modified Accredited Zone (MAZ) includes Alcona, Alpena, Montmorency, and Oscoda counties, while the rest of the state remains an Accredited Free Zone.

Why This Michigan Case Is Significant

What makes this latest case stand out is that while infected wild deer have previously been found in Iosco County, this marks the first confirmed infected cattle herd there. State officials are now conducting an investigation to determine where the infection originated and whether additional herds may be involved.

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MDARD says deer hunting remains one of the key tools used to help control the spread of bovine TB in northeastern Michigan. Which means your hunting buddy can now officially claim he's "protecting public health" while sitting in a blind eating beef jerky at 6 a.m.