It's been explained today that people who test positive again after having been tested negative are shedding dead lung cells with virus particles and these are causing false positives of swab tests; the material collected includes these dead cells, although the person is no longer truly sick.
So far a true re-infection, that I know, hasn't been proven. Fortunately.
Edited by GreatNewsTonight (05/07/20 08:37 PM)
Please take COVID-19 seriously; don't panic but don't deny it; practice social distancing (stay 6ft from people); wash your hands a lot, don't touch your face, don't gather with too many people, so that you help us contain it.