How many people have had mad cow disease in canada and in the u.s.?

US: ~300 per year: Creutzfeldt-jakob disease occurs at a rate of approximately 1 case per million people per year. According to the cdc, the us has reported between 279 and 352 cases a year over the past five years. The public health agency of canada reports between 30 and 53 cases per year in the same period, which is approximately the save overall rate per population.