This isn't known to be true, and in fact is certainly false. The reason we recover from a viral infection is because we develop an antigenic response, immunity if you will, against it.Chuck,
One key thing to remember is that, apparently, no "immunity", of any type, is developed by coming down Covid-19. You could keep getting re-exposed and re-contracting it, theoretically, perpetually.
Since it's an RNA virus and mutates frequently, will ANY vaccine be able to provide adequate protection against it ?
Dave F.
What we don't know is how long it lasts against the current strain and how much it will be meaningful as the virus mutates.
There are a lot of anecdotal reports right now covering lots of points on the spectrum.
What is needed is a strong clinical study to evaluate the immune response to the disease. Here is an example of such a trial that begins enrollment in April:
https://investors.adaptivebiotech.c...ogies-and-microsoft-expand-partnership-decode