问题描述：
英语翻译
A trial gone wrong can have long-term effects:It is no coincidence that northern Nigeria is one of the few areas in the world where polio remains endemic as the Trovan trial added to suspicion of Western medicine.
A trial gone wrong can have long-term effects:It is no coincidence that northern Nigeria is one of the few areas in the world where polio remains endemic as the Trovan trial added to suspicion of Western medicine.
问题解答：
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