A list of factors that compromise vaccine effectiveness incorporated in our model.

Vaccine responsiveness and administration are both captured by the same parameter, p, which is the vaccine effective coverage. An incomplete coverage is either due to the vaccine only being administrated to a proportion of pigs or because not all vaccinated pigs have developed protective immunity. A detailed description of the model parameters is given in Table 2.疫苗应答性与疫苗接种均由同一参数p表征，该参数即为疫苗有效覆盖率（vaccine effective coverage）。接种覆盖率不足的原因不外乎两种：要么仅对部分生猪实施了疫苗接种，要么并非所有接种疫苗的生猪都已产生保护性免疫。模型参数的详细说明见表2。