I think there have been a few unverified reports of people catching the virus again. However these might be caused by false negative tests (viral load being low

I think there have been a few unverified reports of people catching the virus again. However these might be caused by false negative tests (viral load being lower during the time of testing), then they re-take the test when they have a higher viral load(?) and it comes back positive. This is purely based on other comments I've read, I personally know nothing about viruses.