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在最近几十年中,为提高儿童的生存率,曾经进行了一系列国际防治研究项目,其中包括全球性成功地消灭了天花。新项目中有控制儿童腹泻、呼吸系统疾病、营养不良和采用新法接生等。最引人注目的项目之一是 WHO 庞大的免疫项目 EPI(Expanded Programme onImmunization),即对儿童进行预防接种,以对抗六种免疫性疾病——白喉、麻疹、百日咳、小儿麻痹、破伤风和结核病。
In recent decades, a series of international prevention and research projects have been conducted to raise children’s survival rates, including the successful global elimination of smallpox. The new project has control of children’s diarrhea, respiratory diseases, malnutrition and the introduction of new law and so on. One of the most notable projects is the WHO’s Expanded Program on Immunization (EPI), in which children are vaccinated against six immune diseases - diphtheria, measles, whooping cough, poliomyelitis, tetanus and tuberculosis .