Document Detail

A descriptive spatial analysis of bovine tuberculosis in intensively controlled cattle farms in New Zealand.
MedLine Citation:
PMID:  17425934     Owner:  NLM     Status:  MEDLINE    
We describe the temporal and geographical distribution of confirmed cases of bovine tuberculosis (TB) in a population of cattle in the south-east of the North Island of New Zealand. Data were derived from routine TB testing conducted between 1980 and 2003 and included details for 69 farms. Four six-year periods were defined to coincide with changes in depopulation strategies against the wildlife TB reservoir, the brushtail possum Trichosurus vulpecula. For the periods 1980 to 1985 and 1986 to 1991 the median annual incidence rate of TB was 0.4 and 4.7 cases per 1000 cattle-years at risk, respectively. For the period 1992 to 2003 the median annual incidence rate of TB decreased to 1.8 cases per 1000 cattle-years at risk, coincident with the use of poisoning to control possums in the surrounding forest park (a major possum habitat area). We identified clusters of TB cases adjacent to the forest park and found no evidence of spatio-temporal interaction of TB risk among farms. Our findings support the hypothesis that possums living in the forest park are a source of bovine TB in this area and that farm-to-farm spread of disease was not an important infection mechanism.
Thibaud Porphyre; Joanna McKenzie; Mark Stevenson
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2007-04-11
Journal Detail:
Title:  Veterinary research     Volume:  38     ISSN:  0928-4249     ISO Abbreviation:  Vet. Res.     Publication Date:    2007 May-Jun
Date Detail:
Created Date:  2007-04-11     Completed Date:  2007-07-31     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9309551     Medline TA:  Vet Res     Country:  France    
Other Details:
Languages:  eng     Pagination:  465-79     Citation Subset:  IM    
EpiCentre, Institute of Veterinary, Animal, and Biomedical Sciences, Massey University, PB 11222, Palmerston North 4442, New Zealand.
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MeSH Terms
Animal Husbandry / methods*
Animals, Domestic / microbiology
Animals, Wild / microbiology
Cluster Analysis
Cohort Studies
Disease Reservoirs / veterinary*
New Zealand / epidemiology
Population Control
Population Density
Retrospective Studies
Risk Factors
Sentinel Surveillance / veterinary*
Trichosurus / microbiology*
Tuberculosis, Bovine / epidemiology*,  transmission

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

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