No. Oddly, though Montana claims the threat of brucellosis is so great, ranchers are not required to vaccinate their cattle against the disease. Vaccination would protect livestock far more effectively and economically than the current war against the buffalo. At present, the agencies are wasting 2.8 million tax-dollars each year to harass, capture, and slaughter Yellowstone's buffalo to protect approximately 200 domestic cattle.

Government agencies are prosing a plan to vaccinate
the bison and other wildlife.

For more information see-
BFC Science webpage- Vaccination Program?
News Article 12/10/03- U.S. proposes plan to vaccinate bison