A description of Lineage 1 Mycobacterium tuberculosis from Papua, Indonesia
Djunaedy, H. A. K.; Febinia, C. A.; Hamers, R. L.; Baird, K.; Elyazar, I.; Thuong, N. T. T.; Trimarsanto, H.; Malik, S. G.; Thwaites, G.; van Crevel, R.; Alisjahbana, B.; Chaidir, L.; Ashton, P. M.
Show abstract
Indonesia has the third highest number of tuberculosis (TB) patients infected with Mycobacterium tuberculosis (MTB) Lineage 1 (L1). Most of these MTB L1 cases can be found in Indonesias remote easternmost province of Papua, one of Indonesias most underdeveloped provinces with a particularly high burden for TB. In this study, we sequenced and described 42 MTB L1 isolates from a well-characterized cohort of patients. We found a genetically diverse MTB L1 population with no association between pathogen genetic relatedness and place of residence or pathogen genetic relatedness and patient ethnicity, which could reflect mixing between different locales and ethnicities or our low sampling fraction. Only a small number showed genetic variants associated with drug resistance (5/42, 11.9%), probably due to a lack of effective treatment programs. The Papuan isolates showed similarities to other Island Southeast Asian Countries due to the high proportion of L1.2.1.2.1 (30/42, 71.4%), especially East Timor and the Philippines. This study fills a research gap of MTB L1 in Indonesian Papua and should serve as a stepping stone for further research in the region.
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