2000年至2009年，世界最贫穷国家儿童接受基本的DTP3疫苗比例也从66%上升到79%，这是历年最高的。
Between 2000 and 2009, the percentage of children receiving the basic DTP3 vaccine in the poorest countries of the world jumped from 66 percent to 79 percent, the highest on record.
2000年至2009年，世界最贫穷国家儿童接受基本的DTP3疫苗比例也从66%上升到79%，这是历年最高的。
Between 2000 and 2009, the percentage of children receiving the basic DTP3 vaccine in the poorest countries of the world jumped from 66 percent to 79 percent, the highest on record.
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