A single cow from a small farm in Indiana detected with bovine tuberculosis has shaken the entire county according to IndyStar.com.

The disease was detected at a slaughterhouse in Pennsylvania in December and was traced back to Franklin County, Indiana. TB is a threat to the entire county because it’s highly contagious and is easily spread to cattle from deer. The remaining cattle on the farm of the first case were tested twice, but none tested positively.

The Department of Natural Resources also culled 30 wild deer in the county to test for TB, test results will be available in October. If the deer tests come back positive, the likelihood of TB showing up at another ranch in the county is high. When TB is found in multiple herds, the USDA raises the regulations so all cattle must be tested and transporting cattle across state lines for feeding or processing becomes more difficult.

Although TB is not a threat to humans who drink pasteurized milk or well cooked beef, the disease has drastic economic impact on the cattle industry. Bovine Tuberculosis cases detected in Michigan have cost the state $100 million in the last 15 years.

To learn more about the economic impact of TB, click here.

Source: IndyStar.com