ArticleAntimicrobial resistance and infection control2026
Two clusters of carbapenemase-producing bacteria linked to hospital utility room wastewater drains - an outbreak report.
Article in Antimicrobial resistance and infection control, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundOutbreak investigations of two carbapenemase-producing bacteria (CPB)-clusters identified a link to utility room wastewater drains (URWD), prompting an investigation into CPB-colonization of the hospital's URWD and into utility room management to identify possible breaches in infection prevention and control (IPC) measures.
methodsAt the University Hospital Basel, Switzerland, a cluster of four patients with VIM-1-producing Enterobacter hormaechei and two patients with KPC-3-producing Citrobacter freundii, occurred between 07/2022 - 07/2024. A multidisciplinary team (IPC specialists, nurses, cleaning experts) evaluated utility room management. Wastewater drains in affected patient rooms and 25 utility rooms of the hospital building (including two wards in which the two transmission-cluster occurred) affected by the clusters were screened for CPB-colonization and whole genome sequencing was performed on clinical and environmental CPB isolates.
resultsThe bla
conclusionsURWD serve as reservoirs for CPB. Breaches in utility room management and design, potentially leading to contamination of shared medical equipment by dispersal from contaminated wastewater drains, represent an intervention target for prevention of CPB-transmission.
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