扩大免疫计划麻疹由美洲国际传入美国（１９９０～１９９４年）白常乐摘译徐兆炜校麻疹的国际性传入已经是美国的麻疹控制一个公认的问题。在历史上，西半球的一些国家是麻疹病例传入美国的最常见的来源，而墨西哥是最主要的来源。１９８０～１９８５年间，在美国每年报告... Expanded Immunization Program Measles transmitted by the Americas to the United States (1990-1994) Translated by Dr. Bai Changle The international transmission of measles has become a recognized problem in measles control in the United States. Historically, some countries in the Western Hemisphere were the most common source of measles cases introduced to the United States, with Mexico being the leading source. Between 1980 and 1985, reported annually in the United States ...