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呼吸道传染病麻疹1978年起美国提出了在1982年全国消灭麻疹的计划。1981年与疫苗接种前年代(1950～1962年)相比,已减少了99.4%的病例,发病率为1/10万(3,032例),全国只有10%的县报告有麻疹病例。1982年上半年发病率进一步下降,为0.4/10万,23个州已无病例报告,仅4.4%的县有
Respiratory infections Measles Since 1978, the United States has put forward a plan to eliminate measles nationwide in 1982. There was a decrease of 99.4% in 1981 compared to the pre-vaccination years (1950-1962), with an incidence of 1/10 million (3,032 cases) and only 10% of the counties in the country reported cases of measles. In the first half of 1982, the incidence dropped further to 0.4 / 100,000, with no case reports in 23 states and only 4.4% of counties