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Staphylococcus aureus nasal carriage among homeless population in Lisbon, Portugal

2019Journal article Restricted access
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dc.contributor.authorConceição, T
dc.contributor.authorMartins, H
dc.contributor.authorRodrigues, S
dc.contributor.authorLencastre, H
dc.contributor.authorAires-de-Sousa, M
dc.date.accessioned2019-12-16T12:37:34Z
dc.date.available2019-12-16T12:37:34Z
dc.date.issued2019
dc.description.abstractMethicillin-resistant Staphylococcus aureus (MRSA) nasal carriage is a major risk factor for infection, namely among populations in the community with inherent prompting factors, such as the homeless. In Portugal, there are no data on S. aureus/MRSA nasal carriage among the homeless community. A total of 84 homeless individuals living in Lisbon (34 with no permanent address and 50 living in shelter) were nasally screened for S. aureus/ MRSA. All isolates were characterized to determine antimicrobial susceptibility and clonal type. A total of 43 (51.2%) S. aureus carriers were identified, including a single individual colonized with MRSA (1.2%). S. aureus carriage rate was higher among individuals with no permanent address (58.8% versus 46%), younger (45.7 ± 12.7 versus 52.5 ± 10.8 years), and with diagnosis of asthma (9% versus 0%). The single MRSA belonged to the EMRSA-15 clone (PFGE D, ST15-SCCmec IVh, and spa type t790). Almost half of the methicillin-susceptible S. aureus (MSSA) isolates (41.9%, n = 18) belonged to two major clones, ST398-t1451 (n = 13) and ST30-t399/t11980/t12808 associated with PFGE I (n = 5). A high proportion of isolates showed non-susceptibility to mupirocin (64%), erythromycin (45%), and fusidic acid (20%) and induced resistance to clindamycin (39%). None of the isolates harboured PVL. Our results suggest that the homeless population of Lisbon does not constitute a reservoir of MRSA in the community, but harbour the highly transmissible ST398-t1451 MSSA lineage.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationEur J Clin Microbiol Infect Dis. 2019 Nov;38(11):2037-2044.pt_PT
dc.identifier.doi10.1007/s10096-019-03638-4pt_PT
dc.identifier.issn1435-4373
dc.identifier.urihttp://hdl.handle.net/10400.10/2352
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherSpringerpt_PT
dc.subjectStaphylococcal infectionspt_PT
dc.subjectCross Infectionpt_PT
dc.subjectHomelesspt_PT
dc.subjectPortugalpt_PT
dc.subjectMethicillin-resistant staphylococcus aureuspt_PT
dc.titleStaphylococcus aureus nasal carriage among homeless population in Lisbon, Portugalpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.conferencePlaceBerlinpt_PT
oaire.citation.titleEuropean journal of clinical microbiology and infectious diseases : official publication of the European Society of Clinical Microbiologypt_PT
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT

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