Emergence and spread of carbapenem-resistant Acinetobacter baumannii international clones II and III in Lima, Peru

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dc.contributor.authorLevy-Blitchtein, S.es_ES
dc.contributor.authorRoca, I.es_ES
dc.contributor.authorPlasencia-Rebata, S.es_ES
dc.contributor.authorDel Valle-Mendoza, J.es_ES
dc.contributor.authorVila, J.es_ES
dc.date.accessioned6/22/2022 13:33
dc.date.accessioned2022-09-30T17:01:48Z
dc.date.available6/22/2022 13:33
dc.date.available2022-09-30T17:01:48Z
dc.date.issued2018
dc.description.abstractCarbapenem-resistant Acinetobacter baumannii is the top-ranked pathogen in the World Health Organization priority list of antibiotic-resistant bacteria. It emerged as a global pathogen due to the successful expansion of a few epidemic lineages, or international clones (ICs), producing acquired class D carbapenemases (OXA-type). During the past decade, however, reports regarding IC-I isolates in Latin America are scarce and are non-existent for IC-II and IC-III isolates. This study evaluates the molecular mechanisms of carbapenem resistance and the epidemiology of 80 non-duplicate clinical samples of A. baumannii collected from February 2014 through April 2016 at two tertiary care hospitals in Lima. Almost all isolates were carbapenem-resistant (97.5%), and susceptibility only remained high for colistin (95%). Pulsed-field gel electrophoresis showed two main clusters spread between both hospitals: cluster D containing 51 isolates (63.8%) associated with sequence type 2 (ST2) and carrying OXA-72, and cluster F containing 13 isolates (16.3%) associated with ST79 and also carrying OXA-72. ST2 and ST79 were endemic in at least one of the hospitals. ST1 and ST3 OXA-23-producing isolates were also identified. They accounted for sporadic hospital isolates. Interestingly, two isolates carried the novel OXA-253 variant of OXA-143 together with an upstream novel insertion sequence (ISAba47). While the predominant A. baumannii lineages in Latin America are linked to ST79, ST25, ST15, and ST1 producing OXA-23 enzymes, we report the emergence of highly resistant ST2 (IC-II) isolates in Peru producing OXA-72 and the first identification of ST3 isolates (IC-III) in Latin America, both considered a serious threat to public health worldwide. © 2018 The Author(s).es_ES
dc.formatapplication/pdfes_ES
dc.identifier.doi10.1038/s41426-018-0127-9es_ES
dc.identifier.urihttps://doi.org/10.1038/s41426-018-0127-9
dc.language.isoenges_ES
dc.publisherNature Publishing Groupes_ES
dc.rightsinfo:eu-repo/semantics/closedAccesses_ES
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/es_ES
dc.sourceEmerging Microbes and Infectionses_ES
dc.subjectImmunology and Microbiologyes_ES
dc.subjectMedicinees_ES
dc.subjectPharmacology, Toxicology and Pharmaceuticses_ES
dc.subject.ocdehttp://purl.org/pe-repo/ocde/ford#3.01.03es_ES
dc.titleEmergence and spread of carbapenem-resistant Acinetobacter baumannii international clones II and III in Lima, Perues_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.type.versioninfo:eu-repo/semantics/publishedVersiones_ES
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