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1消除麻疹在具有一定数量人口的大地理区域内,无本土麻疹病毒传播,输入麻疹病毒也不能持续传播。所有的隔离病例和传播链都与输入病例有关。为了保持消除麻疹,必须通过恰当的麻疹疫苗免疫策略保持高的人群免疫力。2麻疹输入是通过流行病学(麻疹确诊病例在皮疹出现前7~18d感染麻
1 Elimination of measles In a large geographical area with a certain population, there is no local transmission of measles virus nor can the imported measles virus be transmitted on a sustained basis. All isolated cases and transmission chains are related to the input case. In order to keep the measles eradicated, a high population immunity must be maintained through appropriate measles vaccine immunization strategies. 2 measles input is through epidemiology (measles cases confirmed in the rash 7 ~ 18d before infection