Another brief review of the literature by Kojima and Klausner in The Lancet Infectious Diseases had a different conclusion; “Given the evidence of immunity from previous SARS-CoV-2 infection, however, policy makers should consider recovery from previous SARS-CoV-2 infection equal to immunity from vaccination for purposes related to entry to public events, businesses, and the workplace, or travel requirements.”

Therein lies much of the data and the crux of the debate. Is Prior Covid as good as vaccination and why are people with confirmed Covid getting mandated to be vaccinated? //

Which brings us to hybrid immunity. The vaccine immunity is specific to the spike protein, whereas the immunity from infection is directed to the whole virus, and it is clear they are complementary. Every study, and there are more than 25, that has looked at neutralizing antibodies and memory B and T cells has showed there is additivity of the immune response when a person has both forms of immunity. The Science Magazine succinct review by Shane Crotty is outstanding, with the summary Figure below