A longitudinal study of Escherichia coli O157 in fourteen cattle herds

Escherichia coli O157 shedding in 14 cattle herds was determined by faecal culture at intervals of approximately 1 month for up to 13 months. The overall prevalence was 1·0% (113/10832 faecal samples) and 9 of the 14 herds were detected as positive. Herds positive 2 years previously (n=5) had a high...

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Bibliographic Details
Published in:Epidemiology and infection 1997-04, Vol.118 (2), p.193-195
Main Authors: HANCOCK, D. D., BESSER, T. E., RICE, D. H., HERRIOTT, D. E., TARR, P. I.
Format: Article
Language:English
Subjects:
Age Factors
Animal bacterial diseases
Animal Husbandry
Animals
Bacterial diseases
Bacteriology
Beef cattle
Biological and medical sciences
Calves
Cattle
Cattle Diseases - microbiology
Dairy cattle
DNA probes
Epidemiology
Escherichia coli
Escherichia coli Infections - microbiology
Escherichia coli O157
Feces - microbiology
Fundamental and applied biological sciences. Psychology
Heifers
Herds
Infections
Infectious diseases
Longitudinal Studies
Medical sciences
Microbiology
Prevalence
Seasons
Short Paper
Time Factors
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Summary:Escherichia coli O157 shedding in 14 cattle herds was determined by faecal culture at intervals of approximately 1 month for up to 13 months. The overall prevalence was 1·0% (113/10832 faecal samples) and 9 of the 14 herds were detected as positive. Herds positive 2 years previously (n=5) had a higher prevalence of positive cattle (median=1·9%) than herds which had been negative on a previous sampling (n=8, median=0·2%). Weaned heifers had a higher prevalence (1·8%) than did unweaned calves (0·9%) or adults (0·4%). For all herds the highest prevalence occurred in the summer months, which resulted in most of the positive faecal samples being collected on a minority of sampling visits.
ISSN:0950-2688
1469-4409
DOI:10.1017/S0950268896007212