Kendall Kling , Rebecca Osborn , Adil Menon , Janna Williams , Ryan Cardew , Omar Al-Heeti , Phillip Santoiemma , Michael Angarone , Samuel Gatesy , Travis Kochan , Teresa Zembower , Karen Krueger , Egon A. Ozer , Chao Qi
{"title":"异种分枝杆菌阳性的六种呼吸道培养物集群——临床特征和基因组特征","authors":"Kendall Kling , Rebecca Osborn , Adil Menon , Janna Williams , Ryan Cardew , Omar Al-Heeti , Phillip Santoiemma , Michael Angarone , Samuel Gatesy , Travis Kochan , Teresa Zembower , Karen Krueger , Egon A. Ozer , Chao Qi","doi":"10.1016/j.jctube.2023.100397","DOIUrl":null,"url":null,"abstract":"<div><p><em>Mycobacterium xenopi</em> is a slow growing non-tuberculous mycobacterium (NTM) isolated from water systems and has been associated with pseudo-outbreaks and pulmonary infections in humans. We observed a cluster of six respiratory cultures positive for <em>M. xenopi</em> within a six-month period at our institution, approximately double our normal isolation rate of this organism. Only three of the six cases met clinical, radiographic, and microbiologic criteria for NTM infection. An investigation led by our hospital’s Healthcare Epidemiology and Infection Program found no epidemiologic link between the six patients. Three isolates underwent whole-genome sequencing (WGS) and phylogenetic analysis confirmed they were non-clonal. <em>In vitro</em> susceptibility data found the isolates were sensitive to macrolides, moxifloxacin, and rifabutin. Our findings suggest that isolation of <em>M. xenopi</em> from pulmonary specimens may be increasing, further defines the genomic population structure of this potentially emerging infection, and establishes WGS as a useful tool for outbreak investigation strain typing.</p></div>","PeriodicalId":37942,"journal":{"name":"Journal of Clinical Tuberculosis and Other Mycobacterial Diseases","volume":null,"pages":null},"PeriodicalIF":1.9000,"publicationDate":"2023-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A cluster of six respiratory cultures positive for Mycobacterium xenopi –Clinical characteristics and genomic characterization\",\"authors\":\"Kendall Kling , Rebecca Osborn , Adil Menon , Janna Williams , Ryan Cardew , Omar Al-Heeti , Phillip Santoiemma , Michael Angarone , Samuel Gatesy , Travis Kochan , Teresa Zembower , Karen Krueger , Egon A. Ozer , Chao Qi\",\"doi\":\"10.1016/j.jctube.2023.100397\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p><em>Mycobacterium xenopi</em> is a slow growing non-tuberculous mycobacterium (NTM) isolated from water systems and has been associated with pseudo-outbreaks and pulmonary infections in humans. We observed a cluster of six respiratory cultures positive for <em>M. xenopi</em> within a six-month period at our institution, approximately double our normal isolation rate of this organism. Only three of the six cases met clinical, radiographic, and microbiologic criteria for NTM infection. An investigation led by our hospital’s Healthcare Epidemiology and Infection Program found no epidemiologic link between the six patients. Three isolates underwent whole-genome sequencing (WGS) and phylogenetic analysis confirmed they were non-clonal. <em>In vitro</em> susceptibility data found the isolates were sensitive to macrolides, moxifloxacin, and rifabutin. Our findings suggest that isolation of <em>M. xenopi</em> from pulmonary specimens may be increasing, further defines the genomic population structure of this potentially emerging infection, and establishes WGS as a useful tool for outbreak investigation strain typing.</p></div>\",\"PeriodicalId\":37942,\"journal\":{\"name\":\"Journal of Clinical Tuberculosis and Other Mycobacterial Diseases\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.9000,\"publicationDate\":\"2023-09-09\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Clinical Tuberculosis and Other Mycobacterial Diseases\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2405579423000530\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"INFECTIOUS DISEASES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Clinical Tuberculosis and Other Mycobacterial Diseases","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2405579423000530","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"INFECTIOUS DISEASES","Score":null,"Total":0}
A cluster of six respiratory cultures positive for Mycobacterium xenopi –Clinical characteristics and genomic characterization
Mycobacterium xenopi is a slow growing non-tuberculous mycobacterium (NTM) isolated from water systems and has been associated with pseudo-outbreaks and pulmonary infections in humans. We observed a cluster of six respiratory cultures positive for M. xenopi within a six-month period at our institution, approximately double our normal isolation rate of this organism. Only three of the six cases met clinical, radiographic, and microbiologic criteria for NTM infection. An investigation led by our hospital’s Healthcare Epidemiology and Infection Program found no epidemiologic link between the six patients. Three isolates underwent whole-genome sequencing (WGS) and phylogenetic analysis confirmed they were non-clonal. In vitro susceptibility data found the isolates were sensitive to macrolides, moxifloxacin, and rifabutin. Our findings suggest that isolation of M. xenopi from pulmonary specimens may be increasing, further defines the genomic population structure of this potentially emerging infection, and establishes WGS as a useful tool for outbreak investigation strain typing.
期刊介绍:
Journal of Clinical Tuberculosis and Mycobacterial Diseases aims to provide a forum for clinically relevant articles on all aspects of tuberculosis and other mycobacterial infections, including (but not limited to) epidemiology, clinical investigation, transmission, diagnosis, treatment, drug-resistance and public policy, and encourages the submission of clinical studies, thematic reviews and case reports. Journal of Clinical Tuberculosis and Mycobacterial Diseases is an Open Access publication.