| Literature DB >> 30404943 |
Farzam Vaziri1,2, Thomas A Kohl3,4, Hasan Ghajavand1,2, Mansour Kargarpour Kamakoli1,2, Matthias Merker3,4, Shima Hadifar1,2, Sharareh Khanipour1, Abolfazl Fateh1,2, Morteza Masoumi1, Seyed Davar Siadat1,2, Stefan Niemann5,4.
Abstract
The emergence and spread of multidrug resistant (MDR) Mycobacterium tuberculosis complex (MTBC) strains is a critical global health problem. Between 2014 and 2018, 606 MTBC strains were isolated from 13,892 suspected pulmonary tuberculosis (TB) patients in Tehran, Iran, including 16 (2.6%) MDR-TB cases. A combination of phenotypic and genotypic methods (whole-genome sequencing) was employed for the identification of additional drug resistances and strain-to-strain genetic distances as a marker for recent transmission events. MDR and extensively drug-resistant (XDR) TB cases were almost exclusively infected by lineage 2/Beijing strains (14/16, P < 0.001). We further showed that recent transmission and/or recent introduction of lineage 2/Beijing strains contribute to high XDR-TB rates among all MDR-TB cases and should be considered an emerging threat for TB control in Tehran. In addition, the extensive pre-existing drug resistance profiles of MDR/XDR strains will further challenge TB diagnostics in the region.Entities:
Keywords: Mycobacterium tuberculosiszzm321990; Tehran; extensive drug resistance; multidrug resistance; whole-genome sequencing
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Year: 2019 PMID： 30404943 PMCID： PMC6322472 DOI： 10.1128/JCM.01477-18
Source DB: PubMed Journal: J Clin Microbiol ISSN： 0095-1137 Impact factor: 5.948