State livestock officials are reporting for the second time in less than two weeks that they've found the disease brucellosis in a Montana cattle herd.
The Department of Livestock said Monday that a cow from a herd in Carbon County tested positive for the disease.
Brucellosis can cause pregnant animals to abort their young. It's been largely eradicated from livestock but persists in elk and other wildlife in and around Yellowstone National Park.
State Veterinarian Marty Zaluski says the infected animal had tested negative during a prior test last year. The positive test came after the cow spent time grazing within the state's designated brucellosis surveillance zone in Park County.
Brucellosis has been found in Montana cattle in five of the past eight years.