Document Detail


Risk factors for bovine tuberculosis in New Zealand cattle farms and their relationship with possum control strategies.
MedLine Citation:
PMID:  18479769     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
This paper reports the investigation of farm-level risk factors for confirmed bovine tuberculosis (TB), based on a retrospective cohort study of a population of cattle in the lower North Island of New Zealand. Data were obtained from the TB testing surveillance programme operational in this area since the mid-1970s and comprised 190,665 cattle-years at risk from July 1980 to June 2004 (inclusive). A mixed-effects Poisson regression model was used to investigate the influence of farm-level covariates on the number of cattle confirmed with TB throughout the study period. This model was interpreted in context of depopulation strategies for the wildlife reservoir for TB, the brushtail possum Trichosurus vulpecula, that were applied in this area. The model showed that, despite intensification of possum control strategies over time, proximity to forest parks (a principal possum habitat in this area) remained a significant predictor of the number of confirmed cases of TB detected per farm per year. Our analyses showed a significant, three-fold increase in TB risk in dairy cattle relative to beef conditional on the size of local possum habitat, and confirmed the positive influence of cattle population size and the presence of previous infection status as a determinant of the number of confirmed TB cases per farm per year.
Authors:
Thibaud Porphyre; Mark A Stevenson; Joanna McKenzie
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2008-05-13
Journal Detail:
Title:  Preventive veterinary medicine     Volume:  86     ISSN:  0167-5877     ISO Abbreviation:  Prev. Vet. Med.     Publication Date:  2008 Aug 
Date Detail:
Created Date:  2008-06-30     Completed Date:  2008-09-30     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8217463     Medline TA:  Prev Vet Med     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  93-106     Citation Subset:  IM    
Affiliation:
EpiCentre, Institute of Veterinary, Animal, and Biomedical Sciences, Massey University, Private Bag 11-222, Palmerston North, New Zealand. T.Porphyre@massey.ac.nz
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MeSH Terms
Descriptor/Qualifier:
Animals
Animals, Domestic
Animals, Wild
Cattle
Cohort Studies
Demography
Disease Reservoirs / microbiology,  veterinary*
Female
Male
New Zealand / epidemiology
Population Control
Population Density
Population Surveillance
Retrospective Studies
Risk Factors
Sentinel Surveillance / veterinary*
Sex Factors
Trichosurus / microbiology*
Tuberculosis, Bovine / epidemiology*,  transmission

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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