Format

Send to

Choose Destination
Epidemiol Infect. 1997 Apr;118(2):193-5.

A longitudinal study of Escherichia coli O157 in fourteen cattle herds.

Author information

1
Field Disease Investigation Unit, Washington State University, Pullman 99164-6610, USA.

Abstract

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.

PMID:
9129597
PMCID:
PMC2808780
DOI:
10.1017/s0950268896007212
[Indexed for MEDLINE]
Free PMC Article

Supplemental Content

Full text links

Icon for PubMed Central
Loading ...
Support Center