A brucellosis-positive cow has been found in a herd from a Madison County ranch, according to the Montana Department of Livestock.
The department said in a press release the ranch is within Montana’s brucellosis
Designated Surveillance Area
. The cow was euthanized, and all other animals on the ranch tested negative.
The infected cow was detected as part of a voluntary whole-herd test, and brucellosis was confirmed at the National Veterinary Services Laboratories in Ames, Iowa.
The Department of Livestock said the ranch is under quarantine and an epidemiological investigation has been started.
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