Source of this post is at https://twitter.com/michaelmina_lab/status/1531030561082458112 and its comments Author is Michael Mina ([email protected]_lab) Translated by KevinZonda 假阴性 正如妊娠测试（译者注：验孕棒）一样，如果过早使用任何测试都会呈现阴性结果。而暴露后 1 天内的PCR测