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Persistence of S. typhimurium in a large dairy herd

Published online by Cambridge University Press:  15 May 2009

N. Giles ,
Sheilagh A. Hopper  and
C. Wray
N. Giles*
Affiliation:
Ministry of Agriculture, Fisheries and Food, Veterinary Investigation Centre, The Elms, College Road, Sutton Bonington, Loughborough, Leicestershire LE12 5RB
Sheilagh A. Hopper
Affiliation:
Ministry of Agriculture, Fisheries and Food, Veterinary Investigation Centre, The Elms, College Road, Sutton Bonington, Loughborough, Leicestershire LE12 5RB
C. Wray
Affiliation:
Ministry of Agriculture, Fisheries and Food, Central Veterinary Laboratory, Weybridge, Surrey KT15 3NB
*
Dr N. Giles, MAFF, Hook Rise South, Tolworth, Surbiton, Surrey KT6 7NF.
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Summary

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Salmonella typhimurium 49a infection in a large dairy herd persisted for 3·5 years. Illness initially occurred in cows and calves but latterly although there were fewer clinical cases milk filters were culturally positive on 26 out of 73 samplings. Three associated human disease incidents occurred. Individual milk samples identified one cow as an excreter and the organism was recovered from the mammary gland of this animal at slaughter. Correlation between calving pattern, the times of calving and the occurrence of positive milk filters suggest that the cow may have been excreting the organism intermittently from the udder for 2·5 years.

Type
Research Article
Information
Epidemiology & Infection , Volume 103 , Issue 2 , October 1989 , pp. 235 - 241
Copyright
Copyright © Cambridge University Press 1989

References

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