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国家卫健委:无症状感染者有传染性

2020-04-01 新华社 新华社

国家卫健委31日在官网发布《关于新型冠状病毒无症状感染者的防控工作答问》,对近来网民热议的无症状感染者相关问题进行回答。

国家卫健委31日在官网发布《关于新型冠状病毒无症状感染者的防控工作答问》,对近来网民热议的无症状感染者相关问题进行回答。数据显示,截至2020年3月30日24时,接受医学观察的无症状感染者为1541例,其中境外输入205例。

文章提到,根据国家和部分省份开展的密切接触者监测数据,无症状感染者的密切接触者存在二代病例续发,流行病学调查中发现个别由无症状感染者导致的聚集性疫情,有小样本量的研究显示无症状感染者呼吸道样本中的病毒载量与确诊病例没有太大差异。

综合目前的监测和研究,无症状感染者存在传染性,但其传染期长短、传染性强弱、传播方式等尚需开展进一步科学研究。部分专家认为鉴于无症状感染者的呼吸道标本能检出病原核酸,但由于无咳嗽、打喷嚏等临床症状,病原排出体外引起传播的机会较确诊病例相对少一些。

文章提到,新冠病毒无症状感染者是指无相关临床症状,如发热、咳嗽、咽痛等可自我感知或可临床识别的症状与体征,但呼吸道等标本新冠病毒病原学检测阳性者。

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    2020-12-05 xzw113
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