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b_b  ·  1663 days ago  ·  link  ·    ·  parent  ·  post: I'm helping with disease investigation in this pandemic. AMA!

Apparently the other problem with false positives here is that there is lingering dead virus in some previously infected people whose RNA fragments can be detected by PCR. This is leading to some speculation about reinfection that some other researchers in Korea claim to have debunked.