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Strains of the Beijing/W genotype of Mycobacterium tuberculosis have been responsible for large outbreaks of tuberculosis around the world, sometimes involving multi-drug resistance. It has been shown that more recently evolved Beijing sublineages are prone to cause outbreaks. Furthermore Beijing is the single predominant cluster in Sri Lanka. The present study identifies that recently evolved sublineages of Beijing strains are present in the study population. The majority of Beijing isolates (92.85%) were pan-susceptible. However, these findings may have important implications for the control and prevention of tuberculosis in Sri Lanka.

Original publication




Journal article


Indian J Microbiol

Publication Date





410 - 412


Beijing strain, Mycobacterium tuberculosis, Sri Lanka