MSNBC The Rachel Maddow Show December 30, 2021 09:10:00
Because pcr doesnt measure replication competent virus. it measures viral particles, nucleic acid. so, in other words, i could be infected, have cleared the replication-competent virus from me, butre i can continue to be positive with a pcr for several days after recovering and not being transmissible at all. so although a pcr is good to tell you, am i infected, yes, i am infected. but the very fact that its positive for, as the cdc director said, for several days and even weeks later, it doesnt...
Source: archive.org