Children gather at a National Immunization Day booth to receive flags, whistles and balloons: small rewards in exchange for their bravery in agreeing to get inoculated against polio.
孩子们聚集在一个国家免疫日宣传点领取小旗子、哨子和气球：这些赠品是对他们同意接种脊髓灰质炎疫苗的勇气的嘉奖。
In 1988, polio paralysed nearly 1000 children every day worldwide.
1988年，在世界范围内，脊髓灰质炎每天使将近1000名儿童瘫痪。
In 1998, polio struck some 1,000 people per day in 125 countries.
1998年，全世界125个国家中每天约有1 000人得小儿麻痹症。
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