预防接种是控制与消灭相应传染病的最有效武器,具有不可估量的社会效益和经济效益。但在实施大面积人群免疫接种过程中,由于诸多原因,有时可能会出现接种后异常反应。异常反应一旦发生,会使受种者及其家人出现恐惧心理和不必要的经济损失,同时也给免疫接种工作造成不良的影响。 Vaccination is the most effective weapon to control and eliminate the corresponding infectious diseases, with immeasurable social and economic benefits. However, in the course of implementing large-area population immunization, there may be occasional post-vaccination abnormalities due to many reasons. In the event of an abnormal reaction, there will be fear and unnecessary economic losses on the species and their families, as well as adverse effects on immunization.