传染病的流行模型是指可以概括传染病流行的数学式,它能表达流行过程中有关因素间的数量关系,尤其是常用来表达传染病在人群中新发病例数(或率)与时间变化的数量关系。目前国外有关这类模型的报道甚多,大致可分为确定性模型(deterministicmodels)和随机化模型(stochastic models)两类。所谓确定性模型即表达确定性流行的模型,意思是某一流行是在某些假定条件下 The epidemic model of infectious diseases refers to the mathematical formula that can generalize the epidemic of infectious diseases, which can express the quantitative relationship between the related factors in the epidemic, especially the number (or rate) and the change of the number of new infections commonly used to express infectious diseases in the population The number of relations. At present, there are many reports about these kinds of models abroad, which can be divided into two types: deterministic models and stochastic models. The so-called deterministic model is to express a deterministic epidemic model, which means that a certain epidemic is under certain assumptions