一半以上被确诊新冠的人并不知道自己是怎么感染上的

从疾病中心的一项新调查发现： 54%的人新冠检测呈阳性，却不知道自己是如何染病的，其余46%的患者能够回忆起自己曾密切接触过已确诊的人：通常是被确诊的家庭成员或同事。这项调查结果也让人十分担忧，表明这部分不知自己如何染病的人很有可能是被社区中无症状感染者传染。如果一个社区无症状传播较严重，那么接触追踪也会变得特别困难。所以面对这种情况，大家应该认真采取预防措施，任何地方都可能存在病毒。在没有有效的追踪工具时，也应限制与他人的接触数量。此外，这一调查也强调了社区需要增加筛查、病例追踪，并强大测试力度。

A new survey from the Disease Center found that 54% of people tested positive for the coronavirus, but did not know how they contracted the disease. The remaining 46% of patients can recall that they have been in close contact with people who have been diagnosed: usually they are diagnosed Family members or colleagues. The results of this survey are also very worrying, indicating that this part of the people who do not know how to contract the disease is likely to be infected by asymptomatic people in the community. If asymptomatic transmission is more severe in a community, contact tracking can also become particularly difficult. So in the face of this situation, everyone should take serious precautions, as there may be viruses everywhere. When there is no effective tracking tool, the number of contacts with others should also be limited. In addition, this survey also emphasized the need for the community to increase screening, case tracking, and strong testing efforts.  source

指尖新闻：高信噪比，一目了然

新冠疫情追踪