When you’re looking at large populations of people and looking at false positive and false negative rates, it wouldn’t be unheard of for someone to have a false negative somewhere in there.So there have been a few reports of a person testing positive, then testing negative and then some time later testing positive again.
What I haven't heard about these situations seems to be the most important part, imho.
Did the person initially show definite symptoms? Did they then recover from those symptoms? After recovering from symptoms did they start displaying symptoms again?
I haven't seen that mentioned at all. Does anyone know?
As a side note, the WHO took heat for a tweet saying that there’s no evidence that having antibodies confers immunity to getting it again. This is true. It doesn’t mean that having antibodies doesn’t confer immunity, just that there’s currently no evidence. We infer that, but have to acknowledge there isn’t evidence. Likewise, however, there isn’t evidence that our lockdowns, quarantines, or social distancing are what curbed spread. We infer that. But the reality is there isn’t solid evidence for it at this point, and it’s unclear all the variables in that equation and what role they played.