@David_LKaplan @VesperAegis @alexmeshkin Seems like very minimal risk. I doubt there is a single documented instance. Proper PPE works even indoors, outdoors should be absolutely negligible.
Also some used self-collected samples.
@David_LKaplan@VesperAegis@alexmeshkin似乎风险极小。我怀疑没有一个记录在案的例子。正确的个人防护装备即使在室内也能起作用，室外的防护装备绝对可以忽略不计。
还有一些人使用自己采集的样本。