扩大免疫规划(简称 EPI)的目的是:通过预防接种降低6种病的发病率与死亡率。免疫接种是现代医学最经济而有效的预防手段之一,但迄今世界上免疫服务工作应用得不够好,发展中国家,0.5%的新生儿因患脊灰而致残、1%死于新生儿破伤风、2%死于百日咳、2%死于麻疹,总计每年有5百万,每分钟有10个儿童死于上述疾病,如若在儿童期作到早期、完全免疫, The purpose of the Expanded Immunization Program (EPI) is to reduce the incidence and mortality of six diseases by vaccination. Vaccination is one of the most economical and effective preventive measures in modern medicine. However, the immunization service in the world so far has not been applied well. In developing countries, 0.5% of newborns are disabled by polio and 1% of them die in newborns Tetanus, 2% died of pertussis, 2% died of measles, a total of 5 million a year, 10 children die every minute of the above diseases, if early childhood, complete immunity,