Prevalence of Haarlem I and Beijing types of Mycobacterium tuberculosis strains in Iranian and Afghan MDR-TB patients.

Objectives: This survey identified the spoligopatterns of Mycobacterium tuberculosis strains with an international designation responsible for transmission and prevalence of Multi-Drug Resistance Tuberculosis (MDR-TB) among native and immigrant population of Tehran (2000-2005).

Methods: The spacer oligonucleotides typing was performed on 263 M. tuberculosis strains isolated from verified cases of MDR-TB.