Patients exposed to vancomycin-resistant enterococci during in-hospital outbreaks in a low endemic setting: a proposal for risk-based screening

Abstract Background The optimal extent of screening of contact patients (CoPat) after exposure to patients infected or colonized with vancomycin-resistant enterococci (VRE) remains controversial. Methods We retrospectively developed a new risk stratification for screening patients exposed to VRE, ba...

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Main Authors: Andrea C. Büchler, Silvio Ragozzino, Melanie Wicki, Violeta Spaniol, Sammy Jäger, Helena M. B. Seth-Smith, Daniel Goldenberger, Vladimira Hinic, Adrian Egli, Reno Frei, Andreas F. Widmer
Format: Article
Language:English
Published: BMC 2022-04-01
Series:Antimicrobial Resistance and Infection Control
Subjects:
Online Access:https://doi.org/10.1186/s13756-022-01089-9
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author Andrea C. Büchler
Silvio Ragozzino
Melanie Wicki
Violeta Spaniol
Sammy Jäger
Helena M. B. Seth-Smith
Daniel Goldenberger
Vladimira Hinic
Adrian Egli
Reno Frei
Andreas F. Widmer
author_facet Andrea C. Büchler
Silvio Ragozzino
Melanie Wicki
Violeta Spaniol
Sammy Jäger
Helena M. B. Seth-Smith
Daniel Goldenberger
Vladimira Hinic
Adrian Egli
Reno Frei
Andreas F. Widmer
author_sort Andrea C. Büchler
collection DOAJ
description Abstract Background The optimal extent of screening of contact patients (CoPat) after exposure to patients infected or colonized with vancomycin-resistant enterococci (VRE) remains controversial. Methods We retrospectively developed a new risk stratification for screening patients exposed to VRE, based on data from three outbreaks—two with Enterococcus faecium vanB and one with Enterococcus faecium vanA involving 1096 CoPat—in a low endemic setting. We classified them into four risk groups: three on environmental exposure, one by healthcare exposure: high (sharing the same room/bathroom with a VRE-colonized patient), medium (hospitalization in the same room after a VRE-colonized patient’s discharge until terminal disinfection including ultraviolet C (UVc)-disinfection), low (hospitalized in the same room within three weeks before the VRE-colonized patient), and “staff” (screening of patients having the same medical care team). Results VRE-transmission occurred in 7.9% in the high-risk group compared to 0.6% and 0% in the medium and low risk groups. There was a significant trend to higher rates of transmission by risk level of exposure (p < 0.001). In the “staff” group, VRE transmission rate was 2.3%. Conclusion Based on this stratification, we recommend to focus screening of exposed CoPat on the high-risk and “staff” group, saving resources and costs, but larger studies will allow to further improve the yield of VRE screening in the outbreak setting.
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spelling doaj.art-a2c3a67f37f84d7388d31561f7865d822022-12-22T01:50:45ZengBMCAntimicrobial Resistance and Infection Control2047-29942022-04-011111710.1186/s13756-022-01089-9Patients exposed to vancomycin-resistant enterococci during in-hospital outbreaks in a low endemic setting: a proposal for risk-based screeningAndrea C. Büchler0Silvio Ragozzino1Melanie Wicki2Violeta Spaniol3Sammy Jäger4Helena M. B. Seth-Smith5Daniel Goldenberger6Vladimira Hinic7Adrian Egli8Reno Frei9Andreas F. Widmer10Division of Infectious Diseases and Hospital Epidemiology, University Hospital BaselDivision of Infectious Diseases and Hospital Epidemiology, University Hospital BaselDivision of Infectious Diseases and Hospital Epidemiology, University Hospital BaselDivision of Infectious Diseases and Hospital Epidemiology, University Hospital BaselDivision of Infectious Diseases and Hospital Epidemiology, University Hospital BaselClinical Bacteriology and Mycology, University Hospital Basel, University of BaselClinical Bacteriology and Mycology, University Hospital Basel, University of BaselClinical Bacteriology and Mycology, University Hospital Basel, University of BaselClinical Bacteriology and Mycology, University Hospital Basel, University of BaselDivision of Infectious Diseases and Hospital Epidemiology, University Hospital BaselDivision of Infectious Diseases and Hospital Epidemiology, University Hospital BaselAbstract Background The optimal extent of screening of contact patients (CoPat) after exposure to patients infected or colonized with vancomycin-resistant enterococci (VRE) remains controversial. Methods We retrospectively developed a new risk stratification for screening patients exposed to VRE, based on data from three outbreaks—two with Enterococcus faecium vanB and one with Enterococcus faecium vanA involving 1096 CoPat—in a low endemic setting. We classified them into four risk groups: three on environmental exposure, one by healthcare exposure: high (sharing the same room/bathroom with a VRE-colonized patient), medium (hospitalization in the same room after a VRE-colonized patient’s discharge until terminal disinfection including ultraviolet C (UVc)-disinfection), low (hospitalized in the same room within three weeks before the VRE-colonized patient), and “staff” (screening of patients having the same medical care team). Results VRE-transmission occurred in 7.9% in the high-risk group compared to 0.6% and 0% in the medium and low risk groups. There was a significant trend to higher rates of transmission by risk level of exposure (p < 0.001). In the “staff” group, VRE transmission rate was 2.3%. Conclusion Based on this stratification, we recommend to focus screening of exposed CoPat on the high-risk and “staff” group, saving resources and costs, but larger studies will allow to further improve the yield of VRE screening in the outbreak setting.https://doi.org/10.1186/s13756-022-01089-9Vancomycin-resistant enterococciScreeningOutbreakContact investigationsInfection control
spellingShingle Andrea C. Büchler
Silvio Ragozzino
Melanie Wicki
Violeta Spaniol
Sammy Jäger
Helena M. B. Seth-Smith
Daniel Goldenberger
Vladimira Hinic
Adrian Egli
Reno Frei
Andreas F. Widmer
Patients exposed to vancomycin-resistant enterococci during in-hospital outbreaks in a low endemic setting: a proposal for risk-based screening
Antimicrobial Resistance and Infection Control
Vancomycin-resistant enterococci
Screening
Outbreak
Contact investigations
Infection control
title Patients exposed to vancomycin-resistant enterococci during in-hospital outbreaks in a low endemic setting: a proposal for risk-based screening
title_full Patients exposed to vancomycin-resistant enterococci during in-hospital outbreaks in a low endemic setting: a proposal for risk-based screening
title_fullStr Patients exposed to vancomycin-resistant enterococci during in-hospital outbreaks in a low endemic setting: a proposal for risk-based screening
title_full_unstemmed Patients exposed to vancomycin-resistant enterococci during in-hospital outbreaks in a low endemic setting: a proposal for risk-based screening
title_short Patients exposed to vancomycin-resistant enterococci during in-hospital outbreaks in a low endemic setting: a proposal for risk-based screening
title_sort patients exposed to vancomycin resistant enterococci during in hospital outbreaks in a low endemic setting a proposal for risk based screening
topic Vancomycin-resistant enterococci
Screening
Outbreak
Contact investigations
Infection control
url https://doi.org/10.1186/s13756-022-01089-9
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