PMID- 36695463 OWN - NLM STAT- MEDLINE DCOM- 20230126 LR - 20230505 IS - 1560-7917 (Electronic) IS - 1025-496X (Print) IS - 1025-496X (Linking) VI - 27 IP - 48 DP - 2022 Dec TI - Nosocomial outbreak of vancomycin-resistant Enterococcus faecium (VRE) ST796, Switzerland, 2017 to 2020. LID - 10.2807/1560-7917.ES.2022.27.48.2200285 [doi] LID - 2200285 AB - A large clonal outbreak caused by vancomycin-resistant Enterococcus faecium (VRE) affected the Bern University Hospital group from the end of December 2017 until July 2020. We describe the characteristics of the outbreak and the bundle of infection prevention and control (IPC) measures implemented. The outbreak was first recognised when two concomitant cases of VRE bloodstream infection were identified on the oncology ward. During 32 months, 518 patients in the 1,300-bed hospital group were identified as vanB VRE carriers. Eighteen (3.5%) patients developed an invasive infection, of whom seven had bacteraemia. In 2018, a subset of 328 isolates were analysed by whole genome sequencing, 312 of which were identified as sequence type (ST) 796. The initial IPC measures were implemented with a focus on the affected wards. However, in June 2018, ST796 caused another increase in cases, and the management strategy was intensified and escalated to a hospital-wide level. The clinical impact of this large nosocomial VRE outbreak with the emergent clone ST796 was modest. A hospital-wide approach with a multimodal IPC bundle was successful against this highly transmissible strain. FAU - Piezzi, Vanja AU - Piezzi V AD - Department of Infectious Diseases, University Hospital Bern, University of Bern, Bern, Switzerland. FAU - Wassilew, Nasstasja AU - Wassilew N AD - Department of Infectious Diseases, University Hospital Bern, University of Bern, Bern, Switzerland. FAU - Atkinson, Andrew AU - Atkinson A AD - Department of Infectious Diseases, University Hospital Bern, University of Bern, Bern, Switzerland. FAU - D'Incau, Stephanie AU - D'Incau S AD - Department of Infectious Diseases, Lucerne Cantonal Hospital, Lucerne, Switzerland. FAU - Kaspar, Tanja AU - Kaspar T AD - Department of Infectious Diseases, University Hospital Bern, University of Bern, Bern, Switzerland. FAU - Seth-Smith, Helena Mb AU - Seth-Smith HM AD - Institute of Medical Microbiology, University of Zurich, Zurich, Switzerland. AD - Division of Clinical Bacteriology and Mycology, University Hospital Basel, Basel, Switzerland and Applied Microbiology Research, Department of Biomedicine, University of Basel, Basel, Switzerland. FAU - Casanova, Carlo AU - Casanova C AD - Institute for Infectious Diseases, University of Bern, Bern, Switzerland. FAU - Bittel, Pascal AU - Bittel P AD - Institute for Infectious Diseases, University of Bern, Bern, Switzerland. FAU - Jent, Philipp AU - Jent P AD - Department of Infectious Diseases, University Hospital Bern, University of Bern, Bern, Switzerland. FAU - Sommerstein, Rami AU - Sommerstein R AD - Department Health Sciences and Medicine, Clinic St. Anna, University of Lucerne, Lucerne, Switzerland. AD - Department of Infectious Diseases, University Hospital Bern, University of Bern, Bern, Switzerland. FAU - Buetti, Niccolo AU - Buetti N AD - INSERM, IAME, Universite Paris-Cite, Paris, France. AD - Infection Control Programme, University of Geneva Hospitals and Faculty of Medicine, Geneva, Switzerland. FAU - Marschall, Jonas AU - Marschall J AD - Division of Infectious Diseases, Department of Internal Medicine, Washington University School of Medicine, St. Louis, MO, United States. AD - Department of Infectious Diseases, University Hospital Bern, University of Bern, Bern, Switzerland. LA - eng PT - Journal Article PL - Sweden TA - Euro Surveill JT - Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin JID - 100887452 RN - 6Q205EH1VU (Vancomycin) SB - IM MH - Humans MH - Vancomycin MH - *Enterococcus faecium/genetics MH - *Cross Infection/epidemiology MH - Switzerland/epidemiology MH - *Vancomycin-Resistant Enterococci/genetics MH - Disease Outbreaks MH - Hospitals, University MH - *Gram-Positive Bacterial Infections/epidemiology PMC - PMC9716646 OTO - NOTNLM OT - VRE OT - Vancomycin resistant Enterococcus faecium OT - Whole genome sequencing OT - antibiotic resistance OT - infection prevention and control OT - nosocomial outbreak OT - outbreak management COIS- Conflict of interest: None declared. EDAT- 2023/01/26 06:00 MHDA- 2023/01/27 06:00 PMCR- 2022/12/01 CRDT- 2023/01/25 07:13 PHST- 2023/01/25 07:13 [entrez] PHST- 2023/01/26 06:00 [pubmed] PHST- 2023/01/27 06:00 [medline] PHST- 2022/12/01 00:00 [pmc-release] AID - 2200285 [pii] AID - 10.2807/1560-7917.ES.2022.27.48.2200285 [doi] PST - ppublish SO - Euro Surveill. 2022 Dec;27(48):2200285. doi: 10.2807/1560-7917.ES.2022.27.48.2200285.