No evidence so far for the dissemination of carbapenemase-producing Enterobactericeae in the community in Switzerland

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Background: Carbapenemase-producing Enterobacteriaceae represent an increasing threat to public health and to the treatment of serious nosocomial infections. The aim of this study was to screen for the presence of carbapenemase-producing Enterobacteriaceae in human carriers in community settings in Switzerland, a country representative of central Europe.Findings: Three hundred and fourteen stool samples of healthy staff members of a meat-processing company and 291 fecal swabs from primary care patients were recovered in Switzerland between April 2012 and July 2012 and were tested for carbapenemase-producing Enterobacteriaceae isolates by selecting for growth on a carbapenem-containing selective medium. Six resulting isolates (5 Escherichia coli and 1 Citrobacter youngae) were subjected to antimicrobial susceptibility tests and PCR analysis by screening for the carbapenemase genes bla OXA-48, bla VIM, bla NDM-1, and bla KPC as well as for the extended-spectrum ß-lactamase genes bla TEM, bla SHV, bla CTX-M and bla CMY-2. No carbapenemase genes were detected. Resistance to ß-lactam antibiotics was due to carriage of the extended-spectrum ß-lactamase CTX-M-15 in 4 isolates, to CTX-M-14 in one further isolate and to the plasmidic AmpC-ß-lactamase CMY-2 in one isolate.Conclusions: These results show that carbapenemase-producing Enterobacteriaceae are as yet not present in the community. Continuous surveillance is necessary to anticipate future trends in the prevalence and dissemination of carbapenem resistant isolates in the population. © 2013 Nüesch-Inderbinen et al.; licensee BioMed Central Ltd.




Nüesch-Inderbinen, M., Zurfluh, K., Hächler, H., & Stephan, R. (2013). No evidence so far for the dissemination of carbapenemase-producing Enterobactericeae in the community in Switzerland. Antimicrobial Resistance and Infection Control, 2(1).

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