molman
Jim Lenehan (48)
There is no such proof that anyone is immune after catching covid. There were certainly more people catching it more than once in Asia. The herd immunity theory is thus far unproven. Nothing short of a vaccine is a certainty.
https://www.abc.net.au/news/health/2020-07-23/can-you-catch-coronavirus-twice/12481448
Truthfully even a vaccine isn't a certainty either as it likewise relies on herd immunity coupled with the efficacy of the vaccine itself which in many cases may be a lot lower than you expect.