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Trimethoprim resistance in commensal bacteria isolated from farm animals

Published online by Cambridge University Press:  19 October 2009

S. G. B. Amyes
S. G. B. Amyes
Affiliation:
Department of Bacteriology, The Medical School, University of Edinburgh, Teviot Place, Edinburgh EHS 9AG, United Kingdom
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Trimethoprim resistance was examined in faecal bacteria obtained from chickens, sheep, cattle and pigs. The incidence of trimethoprim resistance in porcine strains was 17% (157/922) and, whereas 15·8% (146/922) of these bacteria were highly resistant, only 4% (37/922) of the isolates possessed trimethoprim resistance plasmids. Highly resistant porcine strains were obtained from 44% of the pig farms (41/93) but transferable trimethoprim resistance was found in isolates from 11% (10/93) of the farms. There was an association between the carriage of trimethoprim resistance plasmids and certain farms. Most of the resistance plasmids were not identical with those found in human clinical bacteria but one porcine plasmid was the same as the most ubiquitous trimethoprim resistance plasmid in Edinburgh.

Type
Research Article
Information
Epidemiology & Infection , Volume 98 , Issue 1 , February 1987 , pp. 87 - 96
Copyright
Copyright © Cambridge University Press 1987

References

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