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Cross-sectional survey of antibiotic resistance in Escherichia coli isolated from diseased farm livestock in England and Wales

  • T. E. A. CHENEY (a1), R. P. SMITH (a1), J. P. HUTCHINSON (a2), L. A. BRUNTON (a1), G. PRITCHARD (a3) and C. J. TEALE (a4)...

Summary

Between 2005 and 2007, E. coli obtained from clinical diagnostic submissions from cattle, goats, pigs and sheep to government laboratories in England and Wales were tested for sensitivity to 16 antimicrobials. Resistance was most commonly observed against ampicillin, streptomycin, sulphonamides and tetracyclines. Resistance levels varied significantly between species, with isolates from cattle frequently showing the highest levels. Verocytotoxigenic E. coli (VTEC) expressed less resistance than non-VTEC. Only 19·3% of non-VTEC and 43·5% of VTEC were susceptible to all antimicrobials, while 47·1% and 30·4%, respectively, were resistant to ⩾5 antimicrobials. The resistance phenotype SSuT was commonly observed, and isolates resistant to third-generation cephalosporins were also identified. We recommend judicious antimicrobial usage in the livestock industry in order to preserve efficacy.

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Copyright

Corresponding author

* Author for correspondence: T. E. A. Cheney, APHA – Weybridge, Woodham Lane, New Haw, Addlestone, Surrey, KT15 3NB, UK. (Email: tanya.cheney@apha.gsi.gov.uk)

References

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