Written By Rana G on Tuesday, January 18, 2011 | 4:58 PM
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.
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.
New Year's Eve, following a massive fish kill just 100 miles away days earlier. In the week following, other mass bird deaths were reported in nearby Louisiana and Kentucky. Birds were also reported to fall dead from the sky in Italy and Sweden, and more recently similar incidents have been reported in California and Alabama.