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麻疹是一种急性病毒性传染病,传染性强,且可以导致严重的并发症,甚至死亡。尽管美国从20世纪90年代末持续发生麻疹病例输入,但并未重新建立本土麻疹病毒传播。2001～2008年,美国疾病控制与预防中心(CDC)每年收
Measles is an acute viral infection that is contagious and can cause serious complications and even death. Although the United States continued the import of measles cases from the late 1990s, it did not re-establish the spread of the local measles virus. From 2001 to 2008, the US Centers for Disease Control and Prevention (CDC) receives annually