Longhorn Vaccines & Diagnostics, San Antonio, TX, USA.
City of Milwaukee Health Department, Milwaukee, WI, USA.
Epidemiol Infect. 2014 Jun;142(6):1328-33. doi: 10.1017/S0950268813002409. Epub 2013 Sep 27.
Drug-resistant Mycobacterium tuberculosis bacterium (MTB) is spreading worldwide. Three drug-resistant isolates were detected in Burmese, Hmong, and Indian immigrants currently residing in Milwaukee, Wisconsin, USA. Ion Torrent full-gene sequencing and complete genetic analysis was performed within 5 days and compared to results from traditional drug sensitivity testing (DST). Genetic characterization of seven, full-length resistance-associated genes revealed two MDR and one highly resistant strain with important drug-resistant mutations that were confirmed by traditional DST. The rapid turnaround from sample-to-sequence underscores the public health value of Ion Torrent full-gene sequencing of MDR/XDR genes from epidemiologically significant clinical isolates.
耐药结核分枝杆菌(MTB)正在全球范围内传播。目前居住在美国威斯康星州密尔沃基的缅甸、苗族和印度移民中检测到了三株耐药分离株。在 5 天内进行了 Ion Torrent 全长基因测序和完整的基因分析,并与传统药敏试验(DST)的结果进行了比较。对 7 个全长耐药相关基因的遗传特征分析显示,有两株 MDR 和一株高度耐药菌株,其耐药突变重要,通过传统 DST 得到了证实。从样本到测序的快速周转突显了 Ion Torrent 对具有流行病学意义的临床分离株的 MDR/XDR 基因进行全长基因测序的公共卫生价值。