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Int. J. Environ. Res. Public Health 2015, 12(4), 4203-4213; doi:10.3390/ijerph120404203

Emissions of Escherichia coli Carrying Extended-Spectrum β-Lactamase Resistance from Pig Farms to the Surrounding Environment

1,2,3,†
,
4,†
,
1,2,3,†
,
1
,
5
,
1,2,3 and 1,2,3,*
1
College of Veterinary Medicine, Shandong Agricultural University, Tai'an 271000, Shandong, China
2
Sino-German Cooperative Research Centre for Zoonosis of Animal Origin Shandong Province, Tai'an 271000, Shandong, China
3
Key Laboratory of Animal Biotechnology and Disease Control and Prevention of Shandong Province, Tai'an 271000, Shandong, China
4
Tai'an City Central Hospital, Tai'an 271000, Shandong, China
5
College of Life Sciences, Taishan Medical University, Tai'an 271000, China
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Academic Editor: Oladele A. Ogunseitan
Received: 6 March 2015 / Revised: 3 April 2015 / Accepted: 9 April 2015 / Published: 16 April 2015
(This article belongs to the Special Issue Hazardous Waste and Human Health)
View Full-Text   |   Download PDF [683 KB, uploaded 16 April 2015]

Abstract

The dissemination of extended-spectrum β-lactamase (ESBL)-producing Escherichia coli (E. coli) from food-producing animals to the surrounding environment has attracted much attention. To determine the emissions of ESBL-producing E. coli from pig farms to the surrounding environment, fecal and environmental samples from six pig farms were collected. In total, 119 ESBL-producing E. coli were isolated from feces, air samples, water, sludge and soil samples. Antibiotic susceptibility testing showed that the ESBL-producing isolates were resistant to multiple antibiotics and isolates of different origin within the same farm showed similar resistance phenotypes. Both CTX-M and TEM ESBL-encoding genes were detected in these isolates. CTX-M-14 and CTX-M-15 were the predominant ESBL genes identified. ESBL producers from feces and environmental samples within the same farm carried similar CTX-M types. The results indicated that the ESBL-producing E. coli carrying multidrug resistance could readily disseminate to the surrounding environment. View Full-Text
Keywords: ESBL-producing E. coli; environment; emission; CTX-M ESBL-producing E. coli; environment; emission; CTX-M
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Gao, L.; Tan, Y.; Zhang, X.; Hu, J.; Miao, Z.; Wei, L.; Chai, T. Emissions of Escherichia coli Carrying Extended-Spectrum β-Lactamase Resistance from Pig Farms to the Surrounding Environment. Int. J. Environ. Res. Public Health 2015, 12, 4203-4213.

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