Yellowstone Park bison herd a highly contagious zoonosis caused by ingestion of unpasteurized milk or undercooked meat from infected animals, or close contact with their secretions. Brucellosis occurs naturally in the Yellowstone Bison Herd and the normal winter migrations of bison outside the park have raised concerns that Brucellosis infected Bison may infect cattle. The United States government has programs to eradicate brucellosis in domestic livestock. Since 1934, an estimated $3.5 billion in federal, state, and private funds has been spent on brucellosis eradication in domestic livestock. Over the years, the National Park Service and states bordering the park have implemented various plans to
Brucellosis "reliably" safe as the alternative. In the decades after Evans's work, it was worked out that this genus, which received the name "Brucella" in honor of Bruce, contained several species with varying virulence. The name "brucellosis" gradually replaced the 19th-century names Mediterranean fever and Malta fever. In 1989, neurologists in Saudi Arabia discovered "neurobrucellosis", a neurological involvement in brucellosis. These obsolete names have previously been applied to brucellosis: "Brucella" species were weaponized by several advanced countries by the mid-20th century. In 1954, "B. suis" became the first agent weaponized by the United States at its Pine Bluff Arsenal near Pine