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麻疹是一个容易控制的传染病,但在发展中国家每年死于麻疹的婴幼儿多达几十万。在贫困、营养不良和不卫生的人群中,
Measles is an easily controllable infectious disease, but up to hundreds of thousands of infants and young children die from measles in developing countries each year. Among the poor, undernourished and unsanitary people,