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A longitudinal study of faecal excretion of VTEC 0157 in cattle to determine epidemiological patterns and risk factors - OZ0138C

Description


The objectives of this study are to obtain descriptive epidemiological data of faecal excretion in a random sample of cattle herds, notably the prevalence of affected herds and affected animals, and to develop and investigate hypotheses as to on-farm risk factors for excretion and the effects of transport on the prevalence and rate of excretion.

The relevance to policy is to obtain firmer estimates of the prevalence of cattle excreting VTEC O157 over time and the prevalence of herds with VTEC O157 excretors, and to investigate possible means of reducing the prevalence of excreting cattle presented for slaughter.

Any positive results will be used to advise herd owners on the possible means of reducing the prevalence of cattle excreting VTEC O157.

Objective
Obj. No. Completed by date Description
01 1 March 1999 Develop questionnaire and diary event forms for the prevalence survey and conduct pilot sampling of herds.
02 1 March 1999 Recruit random sample of herds, brief herd owners and herdsmen on the requirements for the survey and formulate sampling time-table for each herd.
03 2 June 2000 Obtain estimates of animal and herd prevalence of faecal excretion in cattle to examine the validity of the current working hypothesis that herd infection is relatively common, and the animal prevalence is low, but age-related.
04 31 March 2002 Design and conduct a longitudinal study to investigate the validity of the risk factors, suggested in the scientific literature and those which emerge from the prevalence survey, for excretion of VTEC O157.
05 31 March 2004 Design and conduct an intervention study to test the emergent hypotheses of the key risk factors to reduce the prevalence of cattle excreting VTEC O157 in order to formulate advice for herd owners.
Project Documents
• Final Report : A longitudinal study of faecal excretion of VTEC 0157 in cattle to determine epidemiological patterns and factors associated with excretion   (316k)
Time-Scale and Cost
From: 2000

To: 2005

Cost: £1,559,373
Contractor / Funded Organisations
Veterinary Laboratories Agency
Keywords
Animal Health              
Biotechnology              
E.coli O157              
Epidemiology              
Plants and Animals              
Transmission              
Zoonoses              
Fields of Study
Animal Health