re: Arky guv: Natural immunity only lasts 90 days.

Another advantage of natural immunity is that an immune response is activated to variants of Covid. Natural immunity remembers all Covid proteins, not just the spike protein. As the virus acquires new characteristics it still retains most of the original ones that natural immunity will continue to react against. The vaccines only provide immune response to 1 spike protein and nothing else. Change that spike protein and the immune response does not occur. So the vaccines lose their efficacy rapidly, as predicted by many researchers, virologists, etc.