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The impact of local heterogeneity on alternative control strategies for foot-and-mouth disease.

机译:局部异质性对口蹄疫替代控制策略的影响。

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摘要

The 2001 epidemic of foot-and-mouth disease (FMD) in the UK resulted in the death of nearly 10 million livestock at a cost that was estimated to be up to 8 billion pounds. Owing to the controversy surrounding the epidemic, the question of whether or not alternative policies would have resulted in significantly better control of the epidemic remains of great interest. A hexagonal lattice simulation of FMD in Cumbria is used to address the central question of whether or not better use could have been made of expert knowledge of FMD transmission to target pre-emptive culling, by assuming that the premises at greatest risk of becoming infected can be targeted for culling. The 2000 UK census and the epidemiological database collected during the epidemic are used to describe key characteristics of disease transmission, and the model is fit to the epidemic time-series. Under the assumptions of the model, the parameters that best fit the epidemic in Cumbria indicate that a policy based on expert knowledge would have exacerbated the epidemic compared with the policy as implemented. However, targeting more distant, high-risk farms could be more valuable under different epidemic conditions, notably, if risk factors of sufficient magnitude could be identified to aid in prioritizing vaccination or culling of farms at high risk of becoming infected.
机译:2001年英国口蹄疫流行导致近1000万头牲畜死亡,估计损失高达80亿磅。由于围绕该流行病的争论,人们对替代政策是否会大大改善对流行病的控制仍存有很大的兴趣。在坎布里亚郡,FMD的六边形格子模拟用于解决以下核心问题:是否可以更好地利用FMD传播的专家知识来针对抢先扑杀,方法是假设处于感染风险最大的住所可以被淘汰的目标。该2000年英国人口普查和该流行病期间收集的流行病学数据库用于描述疾病传播的关键特征,并且该模型适合于该流行病的时间序列。在该模型的假设下,最适合坎布里亚郡流行病的参数表明,与已实施的政策相比,基于专家知识的政策将加剧流行病。但是,在不同的流行病条件下,针对较远的高风险农场可能更有价值,特别是,如果可以识别出足够大的风险因素来帮助优先安排处于高感染风险的农场的疫苗接种或扑杀。

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