Sampling Considerations for Active Surveillance of Livestock Diseases in Developing Countries
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This paper reviews statistical considerations in multistage sampling designs for active surveillance of livestock diseases, with particular emphasis on FMD in Thailand. Issues addressed include statistical efficiency concepts, estimator formulae for proportion of protected animals, and sampling design and cost considerations. A simulated sampling approach to comparing sampling designs with respect to their precision and cost is presented. Comments are also made about the application of active surveillance for livestock disease monitoring in Australia.