Polio will be the first disease to be eradicated in the 21st century and only the second disease ever wiped out by humankind, after smallpox.

脊髓灰质炎将是21世纪根除的第一种疾病，并且只是继天花之后永远消灭的第二种疾病。

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Dracunculiasis is the second disease which is approaching eradication (the first being smallpox) and it occurs only after people drink contaminated water.

麦地那龙线虫病是即将被消灭的第二种疾病(第一种疾病是天花)，人们一旦饮用了受污染的水后就会引发这种疾病。

youdao

Dracunculiasis is the second disease which is approaching eradication (the first being smallpox) and it occurs only after people drink contaminated water.

麦地那龙线虫病是即将被消灭的第二种疾病(第一种疾病是天花)，人们一旦饮用了受污染的水后就会引发这种疾病。

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