@michaelmina_lab @EricTopol How would you characterize the instances where improvised throat swab is positive but not nose swab? e.g. this WHCD attendee
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@michaelmina_lab@EricTopol您如何描述即兴喉拭子呈阳性而鼻拭子呈阴性的情况？e、 g.这位WHCD与会者
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