9 CFR §93.440

1. (a)Level I regions. APHIS considers certain regions of the world to have a program that meets APHIS requirements for brucellosis classification in accordance with § 93.441, and a prevalence of brucellosis in their domestic bovine herds of less than 0.001 percent over at least the previous 2 years (24 consecutive months).
2. (b)Level II regions. APHIS considers certain regions of the world to have a program that meets APHIS requirements for brucellosis classification in accordance with § 93.441, and a prevalence of brucellosis in their domestic bovine herds equal to or greater than 0.001 percent, but less than 0.01 percent over at least the previous 2 years (24 consecutive months).
3. (c)Level III regions. APHIS considers certain regions of the world not to have a program that meets APHIS requirements for brucellosis classification in accordance with § 93.441, to have a herd prevalence equal to or greater than 0.01 percent, or to be unassessed by APHIS with regard to brucellosis prevalence.
4. (d)Listing of regions. Lists of all Level I, Level II, and Level III regions for brucellosis are found online, at http://www.aphis.usda.gov/import_export/animals/live_animals.shtml. Changes to the lists will be made in accordance with § 93.441.