Humm, we know someone that contracted brucellosis from a wild bison. Not something I want to get. It happens.There are solutions on brucellosis outside of eliminating the disease. The current UM&R & CFR are from the 1930's, when undulant fever was a real issue as many folks weren't drinking pastuerized milk and the disease was being transmitted to humans. That's where the zero tolerance issue came in. Compounding that was putting B. Abortus on the select bioterrorism agent lists post 9-11, which led to more difficulties in conducting research on vaccine development.
The reality is Brucellosis isn't a life-threatening issue to livestock, wildlife or people in 2021. It's a regulatory morass from almost a century ago that disregards reality in 2021. There's a lot of common ground between conservationists and livestock producers on removing B. Abortus from the select agent list, and downgrading the issue on the APHIS side.