2015年10月底,巴西东北部的数百名产妇生下了异常的婴儿:他们头部非常小,伴有罕见的严重神经损伤。这引起了世人的警觉。随后流行病学家观察到,这些母亲在怀孕早期都通过蚊子传播感染了寨卡病毒,研究人员迅速证明了其中的因果关系。整个2016年,有关寨卡病毒的报道在大众媒体和科学文献中层出不穷,引起了各种恐慌。官方一度想取消2016年巴西奥运会,不过,最终奥运会如期在里约热内卢顺利召开,期间没有出现感染病例。 By the end of October 2015, hundreds of mothers in northeastern Brazil gave birth to unusual babies: their heads were very small, with rare, serious nerve damage. This has aroused the vigilance of the world. Subsequently, epidemiologists observed that these mothers were infected with Zika virus through mosquito transmission in early pregnancy, and the researchers quickly proved the causal relationship among them. Throughout 2016, reports of Zika virus have been reported in the mass media and scientific literature, causing various panic attacks. Officials wanted to cancel the 2016 Olympic Games in Brazil, but the Olympics ended in Rio de Janeiro as scheduled, with no incidents of infection.