{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,24]],"date-time":"2026-10-24T01:56:06Z","timestamp":1792806966741,"version":"4.5.0"},"reference-count":21,"publisher":"American Society for Microbiology","issue":"15","license":[{"start":{"date-parts":[[2017,8,1]],"date-time":"2017-08-01T00:00:00Z","timestamp":1501545600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.asm.org\/non-commercial-tdm-license"}],"funder":[{"DOI":"10.13039\/100000061","name":"HHS | NIH | Fogarty International Center","doi-asserted-by":"publisher","award":["Sub award number: 60160040-105415-A"],"award-info":[{"award-number":["Sub award number: 60160040-105415-A"]}],"id":[{"id":"10.13039\/100000061","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["journals.asm.org"],"crossmark-restriction":true},"short-container-title":["Appl Environ Microbiol"],"published-print":{"date-parts":[[2017,8]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n          <jats:p>\n            Resistance to carbapenem antibiotics through the production of New Delhi metallo-\u03b2-lactamase-1 (NDM-1) constitutes an emerging challenge in the treatment of bacterial infections. To monitor the possible source of the spread of these organisms in Dhaka, Bangladesh, we conducted a comparative analysis of wastewater samples from hospital-adjacent areas (HAR) and from community areas (COM), as well as public tap water samples, for the occurrence and characteristics of NDM-1-producing bacteria. Of 72 HAR samples tested, 51 (71%) samples were positive for NDM-1-producing bacteria, as evidenced by phenotypic tests and the presence of the\n            <jats:italic>bla<\/jats:italic>\n            <jats:sub>NDM-1<\/jats:sub>\n            gene, compared to 5 of 41 (12.1%) samples from COM samples (\n            <jats:italic>P<\/jats:italic>\n            &lt; 0.001). All tap water samples were negative for NDM-1-producing bacteria.\n            <jats:named-content content-type=\"genus-species\">Klebsiella pneumoniae<\/jats:named-content>\n            (44%) was the predominant bacterial species among\n            <jats:italic>bla<\/jats:italic>\n            <jats:sub>NDM-1<\/jats:sub>\n            -positive isolates, followed by\n            <jats:named-content content-type=\"genus-species\">Escherichia coli<\/jats:named-content>\n            (29%),\n            <jats:named-content content-type=\"genus-species\">Acinetobacter<\/jats:named-content>\n            spp. (15%), and\n            <jats:named-content content-type=\"genus-species\">Enterobacter<\/jats:named-content>\n            spp. (9%). These bacteria were also positive for one or more other antibiotic resistance genes, including\n            <jats:italic>bla<\/jats:italic>\n            <jats:sub>CTX-M-1<\/jats:sub>\n            (80%),\n            <jats:italic>bla<\/jats:italic>\n            <jats:sub>CTX-M-15<\/jats:sub>\n            (63%),\n            <jats:italic>bla<\/jats:italic>\n            <jats:sub>TEM<\/jats:sub>\n            (76%),\n            <jats:italic>bla<\/jats:italic>\n            <jats:sub>SHV<\/jats:sub>\n            (33%),\n            <jats:italic>bla<\/jats:italic>\n            <jats:sub>CMY-2<\/jats:sub>\n            (16%),\n            <jats:italic>bla<\/jats:italic>\n            <jats:sub>OXA-48-like<\/jats:sub>\n            (2%),\n            <jats:italic>bla<\/jats:italic>\n            <jats:sub>OXA-1<\/jats:sub>\n            (53%), and\n            <jats:italic>bla<\/jats:italic>\n            <jats:sub>OXA-47-like<\/jats:sub>\n            (60%) genes. Around 40% of the isolates contained a\n            <jats:italic>qnr<\/jats:italic>\n            gene, while 50% had 16S rRNA methylase genes. The majority of isolates hosted multiple plasmids, and plasmids of 30 to 50 MDa carrying\n            <jats:italic>bla<\/jats:italic>\n            <jats:sub>NDM-1<\/jats:sub>\n            were self-transmissible. Our results highlight a number of issues related to the characteristics and source of spread of multidrug-resistant bacteria as a potential public health threat. In view of the existing practice of discharging untreated liquid waste into the environment, hospitals in Dhaka city contribute to the potential dissemination of NDM-1-producing bacteria into the community.\n          <\/jats:p>\n          <jats:p>\n            <jats:bold>IMPORTANCE<\/jats:bold>\n            Infections caused by carbapenemase-producing\n            <jats:named-content content-type=\"genus-species\">Enterobacteriaceae<\/jats:named-content>\n            are extremely difficult to manage due to their marked resistance to a wide range of antibiotics. NDM-1 is the most recently described carbapenemase, and the\n            <jats:italic>bla<\/jats:italic>\n            <jats:sub>NDM-1<\/jats:sub>\n            gene, which encodes NDM-1, is located on self-transmissible plasmids that also carry a considerable number of other antibiotic resistance genes. The present study shows a high prevalence of NDM-1-producing organisms in the wastewater samples from hospital-adjacent areas as a potential source for the spread of these organisms to community areas in Dhaka, Bangladesh. The study also examines the characteristics of the isolates and their potential to horizontally transmit the resistance determinants. The significance of our research is in identifying the mode of spread of multiple-antibiotic-resistant organisms, which will allow the development of containment measures, leading to broader impacts in reducing their spread to the community.\n          <\/jats:p>","DOI":"10.1128\/aem.00793-17","type":"journal-article","created":{"date-parts":[[2017,5,20]],"date-time":"2017-05-20T00:35:14Z","timestamp":1495240514000},"update-policy":"https:\/\/doi.org\/10.1128\/asmj-crossmark-policy-page","source":"Crossref","is-referenced-by-count":94,"title":["Environmental Spread of New Delhi Metallo-\u03b2-Lactamase-1-Producing Multidrug-Resistant Bacteria in Dhaka, Bangladesh"],"prefix":"10.1128","volume":"83","author":[{"given":"Mohammad Aminul","family":"Islam","sequence":"first","affiliation":[{"name":"Enteric and Food Microbiology Laboratory, icddr,b, Dhaka, Bangladesh"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Moydul","family":"Islam","sequence":"additional","affiliation":[{"name":"Enteric and Food Microbiology Laboratory, icddr,b, Dhaka, Bangladesh"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rashedul","family":"Hasan","sequence":"additional","affiliation":[{"name":"Enteric and Food Microbiology Laboratory, icddr,b, Dhaka, Bangladesh"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"M. Iqbal","family":"Hossain","sequence":"additional","affiliation":[{"name":"Enteric and Food Microbiology Laboratory, icddr,b, Dhaka, Bangladesh"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ashikun","family":"Nabi","sequence":"additional","affiliation":[{"name":"Enteric and Food Microbiology Laboratory, icddr,b, Dhaka, Bangladesh"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mahdia","family":"Rahman","sequence":"additional","affiliation":[{"name":"Enteric and Food Microbiology Laboratory, icddr,b, Dhaka, Bangladesh"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wil H. F.","family":"Goessens","sequence":"additional","affiliation":[{"name":"Department of Medical Microbiology &amp; Infectious Diseases, Erasmus University Medical Center, Rotterdam, The Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hubert P.","family":"Endtz","sequence":"additional","affiliation":[{"name":"Department of Medical Microbiology &amp; Infectious Diseases, Erasmus University Medical Center, Rotterdam, The Netherlands"},{"name":"Fondation M\u00e9rieux, Lyon, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8162-5090","authenticated-orcid":false,"given":"Alexandria B.","family":"Boehm","sequence":"additional","affiliation":[{"name":"Department of Civil and Environmental Engineering, Stanford University, Stanford, California, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shah M.","family":"Faruque","sequence":"additional","affiliation":[{"name":"Enteric and Food Microbiology Laboratory, icddr,b, Dhaka, Bangladesh"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"235","reference":[{"key":"e_1_3_2_2_2","doi-asserted-by":"publisher","DOI":"10.2807\/1560-7917.ES2014.19.20.20809"},{"key":"e_1_3_2_3_2","doi-asserted-by":"publisher","DOI":"10.1007\/s10096-012-1601-2"},{"key":"e_1_3_2_4_2","doi-asserted-by":"publisher","DOI":"10.1099\/jmm.0.064527-0"},{"key":"e_1_3_2_5_2","doi-asserted-by":"publisher","DOI":"10.1093\/jac\/dkr299"},{"key":"e_1_3_2_6_2","doi-asserted-by":"publisher","DOI":"10.1016\/S1473-3099(11)70059-7"},{"key":"e_1_3_2_7_2","doi-asserted-by":"publisher","DOI":"10.3201\/eid2106.141578"},{"key":"e_1_3_2_8_2","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0061090"},{"key":"e_1_3_2_9_2","doi-asserted-by":"publisher","DOI":"10.1586\/eri.10.159"},{"key":"e_1_3_2_10_2","doi-asserted-by":"publisher","DOI":"10.1038\/nrmicro3270"},{"key":"e_1_3_2_11_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.diagmicrobio.2013.02.001"},{"key":"e_1_3_2_12_2","doi-asserted-by":"publisher","DOI":"10.1089\/mdr.2015.0275"},{"key":"e_1_3_2_13_2","doi-asserted-by":"publisher","DOI":"10.1128\/JCM.33.9.2233-2239.1995"},{"key":"e_1_3_2_14_2","first-page":"131","article-title":"Incidence of multiple potentially pathogenic bacteria in tap water from different restaurants in Dhaka city, Bangladesh","volume":"21","author":"Shahidul MK","year":"2014","unstructured":"Shahidul MK MehadeeH SiunjuktaA. 2014. 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