由于疫苗因素、使用因素和受种者个体因素,部分儿童在接受免疫接种后会出现预防接种不良反应。为减少不良反应的发生,杜绝人为的接种事故和接种纠纷,必须实施安全接种。近年来,随着国家扩大免疫规划的实施及二类疫苗在基层接种单位的推广,雅周镇预防接种门诊疫苗达到10多种,并实行按周接 Due to the factors of vaccination, factors of use and individual factors of the recipient, some children may have adverse effects of vaccination after immunization. In order to reduce the occurrence of adverse reactions and eliminate artificial vaccination accidents and vaccination disputes, safe vaccination must be implemented. In recent years, with the implementation of the state’s expanded immunization program and the promotion of vaccines of type II vaccines at the grass-roots level, more than 10 kinds of out-patient vaccines have been introduced in Ya Zhouzhen and administered weekly