Bovine TB has been found in herds in two Northern Michigan counties.
The Department of Agriculture says the disease was found in a dairy herd in Alpena County and a beef herd in Montmorency County.
These are now the 67th and 68th herds identified with bovine TB in Michigan since 1998.
Yearly surveillance testing helped find the diseased herds.
Bovine TB is commonly found in free-ranging white-tailed deer.
It can be transmitted through contact between the deer and cattle.