It seems surprising that she could maintain a positive PCR test for eight weeks. I thought the window was much smaller. Here's a paper that says the false neg

It seems surprising that she could maintain a positive PCR test for eight weeks. I thought the window was much smaller. Here's a paper that says the false negative rate of an RT-PCR test for SARS-CoV-2 increases from 21% on day 9 to 66% by day 21 of symptom onset (and keeps increasing after that). https://www.acc.org/latest-in-cardiology/journal-scans/2020/05/18/13/42/variation-in-false-negative-rate-of-reverse https://www.acc.org/latest-in-cardiology/journal-scans/2020/...