Whole herd slaughter is considered for BSE which is NOT infectious.
Brucellosis infects humans rather readily.
Also TB, FMD, pink-eye. Like tetanus, listeriosis, and even anthrax. Although I would be delighted to be invited to the UK to eat beef every day, I could certainly not recommend my peruvian government to import beef from abroad. We also cancelled an importation of 10,000 heifers from the Netherlands because 2 cases of BSE were diagnosed there recently.