Zika is blamed for causing the birth defect microcephaly, _________________________________. So far, South America has suffered the most from the Zika virus. So far, South America has suffered the most from the Zika virus. Brazil has reported hundreds of cases of microcephaly since the outbreak started there in 2015. 到目前为止，南美洲受寨卡病毒影响最大。自2015年寨卡病毒爆发以来，巴西已经报道了上百起病例。
