> So he didn't consider that Corona has quite a long incubation period, which is why you should normally quarantine for a fortnight. The one thing that I still

> So he didn't consider that Corona has quite a long incubation period, which is why you should normally quarantine for a fortnight. The one thing that I still don't understand (and that, probably, we don't understand at a scientific level) is: if the virus levels are that low that a PCR test is negative, can such patient infect others?