疾病流行强度
疾病流行强度-
感染力是一个定量估计甲肝感染程度的指标，因此，可用该模型比较各地流行状况，评价防治效果，预测疾病的流行强度等。
The force of infection is an index with which the degree of infection can be estimated quantitatively . So the model can be used to compare the epidemic situation in different places , evaluate the effects of prevention and treatment and forecast the epidemic degree of disease .