

@article {14056,
	title = {A longitudinal study of {Escherichia} coli {O}157 in fourteen cattle herds},
	journal = {Epidemiol Infect},
	volume = {118},
	number = {2},
	year = {1997},
	pages = {193{\textendash}195},
	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},
	author = {Hancock, D D and Besser, T E and Rice, D H and Herriott, D E and Tarr, P I}
}
