And natural Immunity from getting the FAUCI FLU and recovering from it will last forever and works on all variants and mutations. At least until last year this was Established and Indisputable Scientific Fact.
No, that was never the case.
As was stated last year, best estimates are that immunity would last 1 to 3 years based on experience with SARS-CoV-1 (SARS2003) and MERS-CoV (MERS2012). Immunity from the vaccines is actually likely to last longer than having a mild or asymptomatic case of COVID-19 since the immune response is much stronger. Further, we have ample evidence of reinfection with the Brazil variant and the South Africa variant. Those who had the April 2020 variant have very limited protection. This is the observable reality.