Sorry Clownface but we don't know either how long these vaccines are efficacious and we don't know how long natural immunity lasts.
Yes, we do. Dumbass. Viruses ALL work the same. Get the disease, and you are immune to it for ever after. The flu is EXACTLY the same as covid. Everything that the flu does, covid will too. ALL viruses mutate. In general the mutations make them more infectious, but less deadly. Just like are seeing with covid. I am not to blame for your ignorance and stupidity. That is on you, in the case of your innate stupidity, and the public schools who taught you nothing.