Yellowstone bison to be vaccinated

Jan 3, 2005
The state is proposing to vaccinate bison that stray from Yellowstone National Park, a move intended to help prevent the spread of disease to Montana cattle. But some activists oppose the Livestock Department’s plan, questioning the vaccine’s efficacy. The debate heats up each winter, when some Yellowstone bison wander off in search of food. Ranchers in Montana worry the animals will transmit brucellosis, a disease that can cause cattle to abort their pr...

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