Have you never heard the word "variant?" I don't recall seeing in your post. What about the medical community that is finding cases now where people had Covid-19, recovered, then came down with the UK variant or the South African variant? Some getting seriously ill the second time. Apparently the body doesn't see the regular old virus as being the same as the new variants and has no immunity from the new ones...at least in some people. I also saw recently that the same thing was happening in Brazil, with it's new variant, at an even higher rate than in the US.
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