WISCONSIN — 200 cows were found dead Friday on a farm in Portage County, Wisconsin. The dead cows had to be removed with semi-trucks. The rest of the farm has not been quarantined, as officials say no threat is posed toward humans or other animals, according the The AP.
The owner of the dead cows was working with a local veterinarian, who initially believed a virus such as infectious bovine rhinotracheitis (IBR) or bovine virus diarrhea (BVD) could be the culprit, according to The Wausau Daily Herald. WSAW News reports that more recent updates have suggested pneumonia as the cause of the mass cow deaths, though such widespread cases of pneumonia are rare. Tests are still underway to determine what is responsible.