2年前研究证实无症状感染者样本均未培养出活病毒,现在还应该再证实一下

2022-06-10 MedSci原创 MedSci原创

据武汉卫健委2020年6月8日通报:武汉市对2020年5月14日—6月1日集中核酸检测排查发现的300名无症状感染者,提取其痰液和咽拭子样本,经中科院武汉病毒所病毒分离培养,300人份样本

据武汉卫健委2020年6月8日通报:武汉市对2020年5月14日—6月1日集中核酸检测排查发现的300名无症状感染者,提取其痰液和咽拭子样本,经中科院武汉病毒所病毒分离培养,300人份样本均未培养出“活病毒”。

专家认为,无症状感染者痰液及咽拭子样本中未培养出病毒,表明样本中的病毒含量极低,或者不存在具有致病性的“活病毒”。同时对300名无症状感染者使用过的牙刷、口杯、口罩、毛巾等个人用品采集擦拭样,检测结果均为阴性;300名无症状感染者的密切接触者1174人核酸检测结果均为阴性,说明我市目前发现的无症状感染者没有传染性。

这项研究结果随着国内疫情的全面控制,逐步被人淡忘。但是客观上减少人们对新冠病毒产生的恐惧心理。

时至今日,疫情已到了奥密克戎时代了,与当初的原始毒株已有很大的不同,毒力大大降低了,无症状感染者比例显著增高(一般认为有90%左右是无症状感染者),那么,此时的无症状感染者,是否能培养出活病毒,这些病人是否有传染性?值得做一些临床试验。当初英国开创了人类挑战试验,是大胆的尝试,但是对无症状感染者进行研究,这是值得投入的。

疫情发展到今天,许多城市像是惊弓之鸟,核酸检测成为各个城市出行的标配。各地只要发生一例核检阳性(不一定是有症状)就会局部或大范围封闭等严格防疫举措。因此,有必要针对无症状感染人群的传播性再进行深入研究。

 

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    2022-07-20 zhzhxiang
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    2022-06-10 145b2d07m08暂无昵称

    有道理

    0

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    2022-06-10 悠游小鱼儿

    学习了

    0

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