What was the source of brucellosis in the Montana herds in 2007 and 2008?
Genetic analysis from the National Veterinary Services Laboratory (NVSL) reported that the Brucella abortus bacteria isolated from Montana’s livestock cases in 2007 and 2008 are most similar to Brucella abortus strains isolated from wildlife in the Greater Yellowstone Area (GYA). The results of the genetic analysis, combined with other epidemiological information, strongly suggest wild, infected elk as the source of brucellosis transmission to livestock.