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NEISSERIA GONORRHOEAE GENOMIC DIVERSITY IN HIGH RISK GROUPS IN SWITZERLAND
University of Bern, Institute of Social and Preventive Medicine, Bern, Switzerland.
University of Bern, Institute of Social and Preventive Medicine, Bern, Switzerland.
Örebro universitet, Institutionen för medicinska vetenskaper. WHO Collaborating Centrefor Gonorrhoea and other STIs.ORCID-id: 0000-0002-0688-2521
University of Bern, Institut für Infektionskrankheiten, Bern, Switzerland.
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2019 (Engelska)Ingår i: Sexually Transmitted Infections, ISSN 1368-4973, E-ISSN 1472-3263, Vol. 95, nr Supl. 1, s. A281-A281Artikel i tidskrift, Meeting abstract (Övrigt vetenskapligt) Published
Abstract [en]

Background: Neisseria gonorrhoeae cases are increasing in Europe, with decreasing susceptibility to first line antibiotics. Whole genome sequencing (WGS) provides detailed information about gonococcal molecular epidemiology and prediction of antimicrobial resistance (AMR), especially if linked to epidemiological data. The aim of this study was to examine molecular, clinical and social epidemiological aspects of gonorrhoea infections in Switzerland.

Methods: In 2015–2016, we cultured urethral, cervical, vaginal, rectal, and pharyngeal specimens from patients in three clinics predominantly attended by men who have sex with men (MSM) and female sex workers (FSW). MSM also completed a sexual behaviour questionnaire. Minimal inhibitory concentrations (MIC) were assessed by Etest, interpreted using EUCAST breakpoints except azithromycin (2 mg/L); WGS used an Illumina Miseq.

Results: We sequenced 140 isolates from 116 participants, MSM (107, 92%, mean age 35.8 years) and FSW (6, 5%, mean age 25.3 years). Amongst MSM, 48/105 respondents (45.7%) reported recent sex abroad. Three patients (two MSM and one FSW) carried different strains at different body sites. The isolates show large genomic diversity, with 69 NG-MAST types and 37 MLST sequence types, largely embedded within characterised European Union clusters. NG-MAST 1407 was identified in n=4 isolates from two patients (FSW, not travel-associated and MSM, sex elsewhere in Europe). Mosaic penAXXXIV was seen in these isolates, and also in an NG-MAST 13488 from an MSM, which was also not travel associated. One isolate (heterosexual male, not travel-associated) with elevated cefixime MIC (0.19mg/ml) carried a mosaic penAX in an NG-MAST 10557 background. Ciprofloxacin resistance was seen in these six isolates, and overall in 59/140 (42%), all containing GyrA mutations S91F and D95A/G/N.

Conclusion: Switzerland has a high diversity of circulating gonorrhoea, generally related to European clusters. Multidrug resistant isolates were not identified in this study, but NG-MAST 1407 and penA mosaics, associated with elevated cephalosporin MICs, are circulating.

Ort, förlag, år, upplaga, sidor
BMJ Publishing Group Ltd, 2019. Vol. 95, nr Supl. 1, s. A281-A281
Nationell ämneskategori
Infektionsmedicin
Identifikatorer
URN: urn:nbn:se:oru:diva-79394DOI: 10.1136/sextrans-2019-sti.705ISI: 000506050104031OAI: oai:DiVA.org:oru-79394DiVA, id: diva2:1388713
Tillgänglig från: 2020-01-27 Skapad: 2020-01-27 Senast uppdaterad: 2020-01-27Bibliografiskt granskad

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Golparian, DanielUnemo, Magnus

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