South Dakota Board of Animal Health officials are continuing to investigate the discovery of bovine tuberculosis in a cattle herd in Harding County. Since February, 41 infected animals have been found. South Dakota State Veterinarian Dr. Dustin Oedekoven says a cow calf herd was quarantined in February after Bovine TB was found and traced back from a routine inspection at a slaughter plant of cull cows in Nebraska.

He says the South Dakota Board of Animal Health is working with the USDA and the herd owner on how to dispose of the herd.

Oedekoven says the Bovine TB found in the Harding County herd is a strain never seen before in the United States, but was detected in dairy cattle in Mexico.

He says 13 neighboring herds in Harding County are being tested. Six have completed the tests and seven are close to being finalized and there has been no further spread of the disease. Oedekoven says they don’t know how this herd was infected at this time.