> so even the people who do become immune may not stay that way forever... In my country there have been hundreds of thousands of confirmed Covid infections. T

> so even the people who do become immune may not stay that way forever... In my country there have been hundreds of thousands of confirmed Covid infections. There have been <100 confirmed re-infections. It's very early to draw the conclusion that people in general don't build up lasting immunity, and there is more than enough data to support that most people do build up immunity of several months at least. If the latter wasn't true you'd see much more re-infections.