title: A novel approach to assess the probability of disease eradication from a wild-animal reservoir host.
abstract: Surveying and declaring disease freedom in wildlife is difficult because information on population size and spatial distribution is often inadequate. We describe and demonstrate a novel spatial model of wildlife disease-surveillance data for predicting the probability of freedom of bovine tuberculosis (caused by Mycobacterium bovis) in New Zealand, in which the introduced brushtail possum (Trichosurus vulpecula) is the primary wildlife reservoir. Using parameters governing home-range size, probability of capture, probability of infection and spatial relative risks of infection we employed survey data on reservoir hosts and spillover sentinels to make inference on the probability of eradication. Our analysis revealed high sensitivity of model predictions to parameter values, which demonstrated important differences in the information contained in survey data of host-reservoir and spillover-sentinel species. The modelling can increase cost efficiency by reducing the likelihood of prematurely declaring success due to insufficient control, and avoiding unnecessary costs due to excessive control and monitoring.
authors: Landcare Research, Wildlife Ecology and Management, Lincoln, New Zealand.
authors: D P
authors: DP
authors: Anderson
authors: D S L
authors: DS
authors: Ramsey
authors: G
authors: G
authors: Nugent
authors: M
authors: M
authors: Bosson
authors: P
authors: P
authors: Livingstone
authors: P A J
authors: PA
authors: Martin
authors: E
authors: E
authors: Sergeant
authors: A M
authors: AM
authors: Gormley
authors: B
authors: B
authors: Warburton
mesh_terms: D000818:Animals; D001499:Bayes Theorem; D002417:Cattle; D060740:Disease Eradication / Q000379:methods / Q000706:statistics & numerical data; D004197:Disease Reservoirs / Q000662:veterinary*; D006702:Homing Behavior; D008954:Models, Biological; D015233:Models, Statistical; D009163:Mycobacterium bovis; D009520:New Zealand; D011155:Population Control; D011159:Population Surveillance; D012306:Risk; D062206:Spatial Analysis; D048330:Trichosurus; D014376:Tuberculosis / Q000517:prevention & control / Q000662:veterinary*; D014380:Tuberculosis, Bovine / Q000517:prevention & control