预防接种是预防和控制相应传染病最简便、最科学、最有效的手段。但疫苗对机体而言,毕竟是一种异物,还因疫苗质量、运输管理、使用方法、受种者个体差异等因素的影响,极少数人在获得免疫的同时,也会发生各种表现的接种副反应(AEFI)。近年来,由于新疫苗种类和使用量的不断增加,A Vaccination is the easiest, most scientific and effective means of preventing and controlling the corresponding communicable diseases. But the vaccine on the body, after all, is a foreign body, but also because of the quality of the vaccine, transport management, methods of use, the individual differences in the affected individual and other factors, very few people in the immune system, it will also have a variety of performance Vaccination side effects (AEFI). In recent years, due to the increasing number of new vaccines and their use, A.