Enhancing Bayesian risk prediction for epidemics using contact tracing

Details Enhancing Bayesian risk prediction for epidemics using contact tracing Enhancing Bayesian risk prediction for epidemics using contact tracing

2012-03-15

arxiv.org/abs/1203.3366v1

Statistics

Methodology

40 pages, 9 figures. Submitted to Biostatistics

Scientific paper

Contact tracing data collected from disease outbreaks has received relatively little attention in the epidemic modelling literature because it is thought to be unreliable: infection sources might be wrongly attributed, or data might be missing due to resource contraints in the questionnaire exercise. Nevertheless, these data might provide a rich source of information on disease transmission rate. This paper presents novel methodology for combining contact tracing data with rate-based contact network data to improve posterior precision, and therefore predictive accuracy. We present an advancement in Bayesian inference for epidemics that assimilates these data, and is robust to partial contact tracing. Using a simulation study based on the British poultry industry, we show how the presence of contact tracing data improves posterior predictive accuracy, and can directly inform a more effective control strategy.

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