Section 93.437 - Tuberculosis status of foreign regions(a)Level I regions. APHIS considers certain regions of the world to have a program that meets APHIS requirements for tuberculosis classification in accordance with § 93.438 , and a prevalence of tuberculosis in their domestic bovine herds of less than 0.001 percent over at least the previous 2 years (24 consecutive months).(b)Level II regions. APHIS considers certain regions of the world to have a program that meets APHIS requirements for tuberculosis classification in accordance with § 93.438 , and a prevalence of tuberculosis in their domestic bovine herds equal to or greater than 0.001 percent, but less than 0.01 percent, over the previous 2 years (24 consecutive months).(c)Level III regions. APHIS considers certain regions of the world to have a program that meets APHIS requirements for tuberculosis classification in accordance with § 93.438 , and a prevalence of tuberculosis in their domestic bovine herds equal to or greater than 0.01 percent, but less than 0.1 percent, over the previous year (12 consecutive months).(d)Level IV regions. APHIS considers certain regions of the world to have a program that meets APHIS requirements for tuberculosis classification in accordance with § 93.438 , and a prevalence of tuberculosis in their domestic bovine herds equal to or greater than 0.1 percent, but less than 0.5 percent, over the previous year (12 consecutive months).(e)Level V regions. APHIS considers certain regions of the world not to have a program that meets APHIS requirements for tuberculosis classification in accordance with § 93.438 , to have a prevalence of tuberculosis in their domestic bovine herds equal to or greater than 0.5 percent, or to be unassessed by APHIS with regard to tuberculosis.85 FR 57953, Sept. 17, 2020