This cross- sectional study was conducted in Kassala
Teaching Hospital, kassala State (Nov. 2005- Jun. 2008) to study
the epidemiology of tuberculosis and molecular characteristics of
mycobacterium tuberculosis, identify mycobacterium isolates using
biochemical and molecular methods, determine the rate of
mycobacterium drug resistance to anti-tuberculous treatment and to
explore the genotype of mycobacterium tuberculosis resistant
isolates using rpoB gene