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近40余年来,传染病在全世界和我国均发生了重大变化,主要表现在:全球消灭了天花;国际检疫传染病(鼠疫、霍乱、黄热病)得到控制;计划免疫的4种传染病(白喉、百日咳、麻疹、脊髓灰质炎)获得有效预防;列为重点的传染病(肠道传染病、血源传播传染病、自然疫源
In the past 40 years or more, infectious diseases have undergone major changes in the world and in our country. The main manifestations are as follows: smallpoxes are eliminated globally; international quarantine infectious diseases (plague, cholera and yellow fever) are under control; and four infectious diseases planned to be immunized (Diphtheria, whooping cough, measles, poliomyelitis); prevention of infectious diseases (gut-borne diseases, blood-borne infectious diseases, natural foci