Though all cases were mild, doctors were puzzled by a disturbing uptick in cases of Guillain-Barré syndrome, a severe and usually rare neurological complication.
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仅仅是一个巧合?
Was this just a coincidence, or was something more sinister at work?
By the start of 2016, nearly everyone had seen the heart-breaking images of babies born in Brazil with tiny heads.
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母亲怀孕期间遭蚊子叮咬导致婴儿严重神经损伤的这一可能性使公众哗然,也使科学家震惊。
We all heard the tragic stories of their distraught mothers and the bleak outlook projected for their babies.
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他们问:为什么现在才发现问题?
The possibility that a mosquito bite during pregnancy could cause severe neurological damage in babies deeply alarmed the public, but also astonished scientists.
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为什么只在巴西?
They asked: Why only now, and whyonly in Brazil?
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当时,巴西同时还发生了登革热和基孔肯雅热大规模疫情。
At the time, Brazil was also experiencing large outbreaks of dengue and chikungunya.
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是否可能因三种病毒相互影响加大了对子宫中胎儿的损害作用?
Could the three viruses somehow interact, in an amplifying way, to damage babies in the womb?