The discovery of bovine tuberculosis (TB) in a Canadian cow slaughtered in the U.S. back in September has led to the quarantine of approximately 26,000 cattle.

After the initial case five more cattle from the herd of origin in Alberta tested positive for bovine TB, according to the Canadian Food Inspection Agency (CFIA).

Canadian government officials have placed quarantines on 50 farms and ranches primarily located in Alberta, with a few in neighboring Saskatchewan. This impacts at least 26,000 head of cattle.

On-farm testing is expected to take place into early January 2017. The Canadian Press reports, an estimated 10,000 cattle are expected to be slaughtered for the testing procedures.

CFIA veterinarians and compensation teams are working directly with impacted producers.

The strain of bovine TB is closely related to a similar outbreak in 1997 from Central Mexico.