4.6 Article

Massive Spread of OXA-48 Carbapenemase-Producing Enterobacteriaceae in the Environment of a Swiss Companion Animal Clinic

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ANTIBIOTICS-BASEL
卷 11, 期 2, 页码 -

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MDPI
DOI: 10.3390/antibiotics11020213

关键词

CPE; CTX-M15; ESBL; IPC; hand hygiene; carbapenemase; OXA-48; IncL; plasmid

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This study investigated the infection prevention and control standards in a companion animal clinic in Switzerland and found major deficiencies in surface disinfection and hand hygiene compliance, resulting in the spread of antibiotic-resistant bacteria. Various antibiotic-resistant bacteria were found on environmental and employee surfaces, and plasmidic dissemination of bla(OXA-48) was observed within the clinic. The study highlights the importance of improving infection prevention and control standards in veterinary clinics to prevent the spread of antibiotic-resistant microorganisms into the community.
Background: Companion animal clinics contribute to the spread of antimicrobial resistant microorganisms (ARM) and outbreaks with ARM of public health concern have been described. Methods: As part of a project to assess infection prevention and control (IPC) standards in companion animal clinics in Switzerland, a total of 200 swabs from surfaces and 20 hand swabs from employees were collected during four days in a medium-sized clinic and analyzed for extended spectrum beta-lactamase-producing Enterobacteriaceae (ESBL-E), carbapenemase-producing Enterobacteriaceae (CPE), vancomycin-resistant enterococci (VRE), and methicillin-resistant staphylococci (MRS). Results: A total of 22 (11.0%) environmental specimen yielded CPE, 14 (7.0%) ESBL-E, and 7 (3.5%) MRS; MR Staphylococcus aureus were isolated from two (10.0%) hand swabs. The CPE isolates comprised Escherichia coli, Klebsiella pneumoniae, Enterobacter hormaechei, Citrobacter braakii, and Serratia marcescens. Whole genome sequencing revealed that all CPE carried closely related bla(OXA-48) plasmids, suggesting a plasmidic spread within the clinic. The clinic exhibited major deficits in surface disinfection, hand hygiene infrastructure, and hand hygiene compliance. CPE were present in various areas, including those without patient contact. The study documented plasmidic dissemination of bla(OXA-48) in a companion animal clinic with low IPC standards. This poses a worrisome threat to public health and highlights the need to foster IPC standards in veterinary clinics to prevent the spread of ARM into the community.

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