[jakear]

I think its almost certain that if it were possible to be re-infected (at least in short timescales), it would have happened by now, somewhere.

[macintux]

There have been reports, but it’s not to my knowledge clear whether the people who’ve tested positive after being considered recovered were experiencing something else, like a false positive before/after, or weren’t in fact fully recovered.

[deelowe]

Running theories so far are that those were relapses, not reinfections.