The Minnesota Board of Animal Health (MBAH) said this week a cow from a farm in Beltrami County tested positive for bovine tuberculosis (TB). Minnesota has now detected bovine TB in seven beef herds in two counties.

As part of the disease investigation, MBAH asked northwestern Minnesota cattle producers within 10 miles of an infected beef herd or infected white-tail deer to test their cattle for TB. As part of this testing, two animals from a Beltrami beef herd tested suspect for bovine TB. Subsequent testing at the National Veterinary Services Lab in Ames, IA, confirmed TB in an 18-month-old beef heifer. The other animal was negative.

The state can apply for Accredited TB-free status two years after depopulating the last infected herd, pending completion of a thorough disease investigation. The Minnesota Department of Natural Resources is testing hunter-harvested white-tailed deer in the affected area, as well as testing statewide this fall. During the past 12 months, two white-tailed deer have tested positive for TB within one mile of a previously infected cattle herd.

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-- Joe Roybal