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报告:美5%寨卡孕妇面临新生儿出生缺陷问题

2017-06-09 11:35:59   新华网

新华社华盛顿6月8日电(记者林小春)美国疾病控制和预防中心8日发布报告说,美国领土确诊感染寨卡病毒的孕妇中,每20人就有1人面临胎儿或婴儿出生缺陷问题。

报告还说,2016年1月至今年4月,美属萨摩亚、波多黎各、密克罗尼西亚联邦、马绍尔群岛共和国共报告2549名孕妇疑似感染寨卡病毒,其中确诊1508人。在这些孕妇中,120人的胎儿或婴儿出现与寨卡病毒感染相关的出生缺陷。

进一步研究显示,在怀孕不同时期感染寨卡病毒导致后代出现出生缺陷的风险不一。妊娠早期感染寨卡的风险最大,约8%的胎儿或婴儿有出生缺陷;而妊娠中期和晚期的风险分别是5%和4%。

美国疾控中心指出,这是迄今涉及确诊感染寨卡病毒孕妇数量最多的一次研究。考虑到寨卡相关出生缺陷的严重性,女性在怀孕任何时期都必须注意防止寨卡病毒感染。

今年4月,美国疾控中心曾发布报告说,2016年美国本土确诊感染寨卡病毒的250名孕妇中,24人的胎儿或婴儿存在与寨卡病毒感染相关的出生缺陷,比例达10%。而问题最严重的是妊娠早期孕妇,有15%面临胎儿或婴儿出生缺陷问题。

美疾控中心代理主任安妮·舒沙特在一份声明中说:“正如这些最新调查结果所显示的,寨卡病毒对孕妇及其婴儿构成严重威胁,无论怀孕期间何时发生感染。”

2015年以来,寨卡病毒在巴西等美洲国家持续传播。这种病毒主要由蚊子叮咬传播,也可通过性传播。人感染寨卡病毒后可能出现发热、皮疹、关节痛等类似登革热的症状。目前,全球尚无获批上市的寨卡疫苗。

(原标题:报告:美5%寨卡孕妇面临新生儿出生缺陷问题)

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