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Background: The role of the hospital environment as contributory to healthcare acquisition of multidrug-resistant organisms (MDROs) is increasingly recognized. Ultraviolet light decontamination can minimize the environmental bioburden, thereby potentially reducing healthcare acquisition. This effect has been demonstrated for typical environmental MDROs, e.g. meticillin-resistant Staphylococcus aureus, vancomycin-resistant entero-cocci, and Clostridioides difficile; however, its role in reducing carbapenem-resistant Enterobacterales (CRE) incidence rates is unclear.
Aim: To evaluate the impact of continuous ultraviolet light (C-UV) on healthcare acquisition rates of CRE.
Methods: A 26-month pragmatic, prospective interventional study with addition of C-UV decontamination to standard cleaning was conducted in units at high risk for CRE acquisition. Introduction of C-UV followed a 12 month baseline period, with a two-month wash-in period. Implementation included terminal decontamination at discharge and a novel in-use protocol, whereby rooms occupied for ≥48 h were decontaminated during the course of the patients' in-hospital stay. Incidence density rates of CRE during the intervention period were compared to the baseline period using interrupted time series regression. Rates were adjusted for ward/admission prevalence and analysed according to C-UV protocol.
Findings: The in-use C-UV protocol demonstrated a significant negative association with the incidence density rate of CRE when adjusting for CRE admission rate (P = 0.0069). CRE incidence density rates decreased significantly during the intervention period (P = 0.042). Non-intervention units demonstrated no change in incidence density rates when adjusting for ward and/or admission prevalence.
Conclusion: C-UV decontamination can potentially reduce healthcare acquisition of CRE when implemented with an in-use protocol.
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| http://dx.doi.org/10.1016/j.jhin.2021.12.008 | DOI Listing |
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