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世卫组织:寨卡病毒地域扩散加剧 尚无有效疫苗

2016-09-09 05:45:02   北京日报

9月5日,在新加坡,一名工作人员展示搜集到的蚊子幼虫。 新华社/路透

9月2日,在新加坡,一名工作人员检查排水沟中的蚊虫滋生情况。 新华社/路透

原标题:寨卡地域扩散加剧尚无有效疫苗

针对寨卡病毒本地传播病例数量在新加坡不断攀升这一现象,世界卫生组织发言人近日接受新华社记者采访时说,世卫预计寨卡病毒将继续传播,并将波及至所有发现埃及伊蚊的国家和地区。

短短一年多时间,寨卡病毒在美洲大陆蔓延,波及东南亚及非洲,其地域扩散速度令各方始料不及。科学界对寨卡病毒尚存显著认知鸿沟,又无任何有效疫苗,控蚊与自我防护仍是对抗寨卡的有力武器。

构成“突发公共卫生事件”

“都是蚊子闯的祸”,恐怕不足以表达疫情传播的复杂。

寨卡疫情去年在美洲暴发以来,已有69个国家和地区报告蚊媒传播寨卡病毒,美国、法国、德国、新西兰等11个国家今年均发现了寨卡病毒人际传播的证据。

世界卫生组织最新寨卡病毒疫情报告指出,今年4月至6月,寨卡病毒扩散速度有所缓解,而随着北半球入夏,蚊媒活动增多,7、8月病毒地域扩散有所加剧。

8月末,英属维京群岛和新加坡成为寨卡病毒最新波及的地区和国家。尤其是新加坡,在1周多时间里,本地传播病例数量从0例激升至275例。

令人警惕的是,东南亚地区的印度尼西亚、泰国、菲律宾和越南均报告了蚊媒造成寨卡病毒本地传播的证据。

本月初,世卫组织就寨卡病毒召开第四次紧急委员会,指出受地域扩散、科学界对寨卡病毒尚存显著认知鸿沟等因素影响,寨卡病毒感染及其相关的神经系统病变继续构成“国际关注的突发公共卫生事件”。

伴随越来越多国家“中招”,病毒实现本地传播,寨卡病毒正迅速从“突发事件”转变为“常规事件”。世卫组织发言人塔里克·亚沙雷维奇对新华社记者说:“世卫组织预计寨卡病毒将继续传播,并将波及至所有发现埃及伊蚊的国家和地区。”

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