@Mr_Inquisitr @drensber @ann_mcnitt @ignorantprophet @ayshakhoury @CIDRAP No idea. The human challenge trial report was interesting (reported a single droplet was enough) but small sample size and limited applicability to airborne transmission.
@调查官先生@drensber@ann_mcnitt@ignorantprophet@ayshakhoury@CIDRAP不知道。人类挑战试验报告很有趣（报告称一滴就足够了），但样本量小，对空气传播的适用性有限。