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This is Scientific American — 60-Second Science. I'm Christine Herman.
Zika virus infection during pregnancy has been linked to the abnormal brain development called microcephaly. Now a study finds more evidence for the connection.
Researchers at the CDC in the U.S. and the National Health Institute in Colombia found that the number of babies born with microcephaly in Colombia increased more than fourfold during a nine-and-a-half-month span in 2016 compared with the same span in 2015.
"And the peak of Zika virus outbreak in pregnant women was followed approximately six months later with a peak of microcephaly reported in the country."
Margaret Honein, Chief of the Birth Defects Branch at the CDC and a senior author of the study. She says the finding is compelling evidence that the highest-risk period for Zika virus infection is sometime in the first half of pregnancy.
"So this both adds to the evidence and helps confirm that any country experiencing a large Zika virus outbreak should anticipate a large increase in microcephaly. This is not unique to one geographic location, such as Brazil. What we're seeing in Colombia is very similar to what was reported in Brazil."
The study was in the CDC's Mortality and Morbidity Weekly Report.

Honein says growing evidence now exists for an association between the virus and other defects related to a damaged central nervous system.
"These include defects like club foot, joint contractures where the joints are very, very stiff, and things like congenital deafness...and eye abnormalities."
In the U.S., the most recent cases of local transmission of Zika have occurred in parts of Florida and Texas, and there are now more than 1,000 pregnancies with laboratory evidence of Zika virus infection, plus more than 2,000 more in U.S. Territories.
Thanks for listening for Scientific American — 60-Second Science Science. I'm Christine Herman.

参考译文

这里是科学美国人——60秒科学;P4!_e#PUN)ZqW。我是克莉丝汀·赫尔曼vfu]6.cQQX5pws9M。
孕妇在怀孕期间感染塞卡病毒可能会导致胎儿小头畸形，这是一种脑发育异常现象urtl@u8c*4ro2_=^。现在，一项研究发现了能证实这种联系的更多证据KK9JzjH;ZOSkXI。
美国疾病预防控制中心和哥伦比亚国家卫生研究院的研究人员发现，在2016年9个半月的时间里，哥伦比亚新生婴儿患小头畸形的数量比2015年同期增加了四倍多-CLF4Fm[^%HxZ]h^E+5。
“孕妇感染塞卡病毒的高峰期六个月后，哥伦比亚通报的新生儿头小畸形病例也达到了高峰6K90Tw]uOHtkOx%zcB。”
玛格丽特·霍雷恩是美国疾病预防控制中心婴儿缺陷部门的负责人同时也是该研究的高级作者之一b)rCt-WFefbE*b2b+GlS。她表示，该研究结果完全可以证明，塞卡病毒感染风险最高的时期在怀孕时前半阶段CO;peff)*jvR6。
“这同时补充证据并帮助证实，在寨卡病毒大规模爆发的国家，其新生儿头小畸形病例也会大幅增加bqjKE9dN3jQu@(|jA。”这一研究结果并不局限于一个地理位置，即并不局限于巴西ck&-9G)Kb4。因为哥伦比亚的情况和巴西的情况非常相似JjOOxQ@wh&p(。
该研究结果发表在美国疾病预防控制中心的《发病率和死亡率周报》上Zw1ph]^bm(_BXX7e。
霍雷恩表示，现在有越来越多的证据可以证明寨卡病毒同其他因中枢神经系统受损而引发的缺陷之间的关联gRx2E,Ov[;Gu;。
“这些缺陷包括畸形足、表现为关节僵硬的关节挛缩症、先天性耳聋、眼畸形等等G_.q,nAv8W4W。”
在美国，最近的寨卡病毒本土传播病例出现在佛罗里达州和德克萨斯州部分地区，实验室证据显示，现在这些地区有1000余名感染塞卡病毒的孕妇，美国其他地区还有2000余名孕妇感染0&3k6hGb@ur&1FBA。
谢谢大家收听科学美国人——60秒科学[mH^lZ5.~~jRFnCaF.。我是克莉丝汀·赫尔曼bX80Z|&]pCV*。

译文为可可英语翻译，未经授权请勿转载！

重点讲解

重点讲解：
1. be linked to 联系；关系；关联；
例句：For instance 65% of suicide attempts are linked to alcohol.
比如说65%的自杀企图都与酒精有关6v3Hy*6[uO&IcgPx4l。
2. add to 增添；增加；
例句：Fine clothes added to his strikingly handsome appearance.
华丽的服装使他那极其英俊的外貌更为增色XIf9*MSGxZ1-)c^。
3. be unique to 独有的；特有的；
例句：The custom is unique to the region.
这种风俗是这一地区特有的o&X1qCR604K1w。
4. be similar to 相像的；相仿的；类似的；
例句：My opinions are similar to hers.
我的看法跟她的相似dulQfl*o1qRDlt。