Journal
INTERNATIONAL JOURNAL OF INFECTIOUS DISEASES
Volume 66, Issue -, Pages 74-79Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ijid.2017.10.025
Keywords
Antimicrobial resistance; Extended-spectrum-beta-lactamases; Cambodia; Public health issue; Escherichia coli; Klebsiella pneumoniae
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Although antibiotics are too often used inappropriately in Cambodia, published data on antimicrobial resistance in this country are scarce. Epidemic dissemination and the transfer of resistance genes to other bacterial species put the population at risk. The aim of this study was to evaluate the frequency and characteristics of extended-spectrum beta-lactamase (ESBL)-producing Enterobacteriaceae (ESBL-E) isolated in consecutive samples tested at Institut Pasteur du Cambodge over a 4-year period (2012-2015). Antimicrobial susceptibility testing was performed by disk diffusion on agar technique and the results were read automatically using an OSIRIS system. The Etest was used to determine minimum inhibitory concentrations (MIC) for some resistance phenotypes. The strain most commonly identified was Escherichia coli (63.9%). The proportion of ESBL-E increased gradually over the study period, from 23.8% to 38.4%. ESBL was detected in 42.7% of the E. coli strains and 33.7% of all Klebsiella pneumoniae isolated. The proportion of ESBL-producing E. coli increased significantly from 28.9% in 2012 to 48.2% in 2015, while the increase for K. pneumoniae remained non-significant. Multidrug resistance was high in this Cambodian series, with some strains displaying resistance to all antibiotics available in the country. There is currently no established system for the surveillance of antimicrobial resistance in Cambodia. Collecting samples from clinical settings throughout the country is critical to assess the impact of antimicrobial drug use in patients in Cambodia and in the Mekong Region. (C) 2017 The Authors. Published by Elsevier Ltd on behalf of International Society for Infectious Diseases.
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