1. Division of Tuberculosis Elimination, National Centers for HIV/AIDS, STD and TB Prevention,1
2. Epidemiology Program Office,2 and
3. Division of AIDS, STD and Tuberculosis Laboratory Research, National Center for Infectious Diseases,3 Centers for Disease Control and Prevention, Atlanta, Georgia, and
4. National Tuberculosis Reference Laboratory,4
5. The BOTUSA Project,5 and
6. Epidemiology Unit, Ministry of Health,6 Gaborone, Botswana