There are about 9.500 cattle on those 48 premises.
The number of animals slaughtered has increased to 10,500,
all of them owned by one operation with cattle on 18 sites in Alberta.
A cow at that operation tested positive for TB in
September at a United States packing plant.
The Canadian Food Inspection Agency then found six more
infected animals on that operation.
The TB strain had not been seen in Canada before, but is
similar to one in Mexico.
