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  • Title: Prevalence of fecal carriage of extended-spectrum β-lactamase-producing Enterobacteriaceae among healthy adult people in Japan.
    Author: Luvsansharav UO, Hirai I, Niki M, Nakata A, Yoshinaga A, Moriyama T, Yamamoto Y.
    Journal: J Infect Chemother; 2011 Oct; 17(5):722-5. PubMed ID: 21359543.
    Abstract:
    In Japan, the prevalence of extended-spectrum β-lactamase (ESBL) producers in hospital settings has shown an increasing trend. In the present study, we investigated the prevalence of the fecal carriage of ESBL-producing Enterobacteriaceae among healthy adults. Stool samples were collected for the phenotypic and genotypic identification of ESBL-producing Enterobacteriaceae. We found the prevalence of ESBL producers to be 6.4% by phenotypic identification, and 92.9% of them possessed the bla(CTX-M) gene. Among the CTX-M ESBL-producing Enterobacteriaceae, we identified 11 Escherichia coli and 2 Klebsiella pneumonia strains. The findings suggest that the fecal carriage of CTX-M-type ESBL producers by healthy people is rapidly increasing in Japan. This may be one of the causes of the increased spread of ESBL-producing bacteria in hospitals.
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