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Wide dissemination of extended-spectrum β-lactamase-producing Escherichia coli in community residents in the Indochinese peninsula

Authors Nakayama T, Ueda S, Huong B, Tuyen L, Komalamisra C, Kusolsuk T, Hirai I, Yamamoto Y

Received 25 September 2014

Accepted for publication 10 November 2014

Published 23 January 2015 Volume 2015:8 Pages 1—5


Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 4

Editor who approved publication: Professor Suresh Antony

Tatsuya Nakayama,1 Shuhei Ueda,2 Bui Thi Mai Huong,3 Le Danh Tuyen,3 Chalit Komalamisra,4 Teera Kusolsuk,4 Itaru Hirai,2 Yoshimasa Yamamoto1,5

1Global Collaboration Center, Osaka University, Osaka, Japan; 2Faculty of Medicine, University of The Ryukyus, Okinawa, Japan; 3National Institute for Nutrition, Hanoi, Vietnam; 4Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand; 5Osaka Prefectural Institute of Public Health, Osaka, Japan

Abstract: Recent studies have reported a widespread distribution of extended-spectrum β-lactamase (ESBL)-producing bacteria, not only in the nosocomial setting, but also in the community; some local communities in Southeast Asia have been reported to show a high prevalence of ESBL-producing bacteria. However, the details regarding the quantitative/qualitative state of ESBL-producing bacterial spread in Southeast Asia are currently unclear. Thus, the aim of this study was to assess the state of ESBL-producing bacterial spread in community residents from the Indochinese peninsula, as a representative region of Southeast Asia. In order to achieve this aim, local community residents in Laos and Vietnam were examined for fecal carriage of ESBL-producing Enterobacteriaceae, and the findings were compared with data from a previous study in Thailand which was conducted in the same manner as this study. Between 47.0%–70.2% of the Laotian and Vietnamese residents carried ESBL-producing CTX-M genotype Enterobacteriaceae. The most common sub-genotypes of CTX-M were CTX-M-1 (33.0%–47.5%) and CTX-M-9 (47.5%–64.1%), and these rates were similar among all three countries. Taken together, these results confirmed that ESBL-producing Enterobacteriaceae are widely disseminated in Indochinese countries, such as Thailand, Laos, and Vietnam.

Keywords: extended-spectrum β-lactamase (ESBL), rural residents, Indochinese peninsula, fecal carriage

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