In principle yes, but The PCR test is usually a throat swab, where detectable amounts often disappear after a few days, even in severely symptomatic cases. Thi

In principle yes, but The PCR test is usually a throat swab, where detectable amounts often disappear after a few days, even in severely symptomatic cases. This is the reason why China started to accept clinical diagnosis like chest scans, causing a sudden big spike in cases.