I'm sure. Chickenpox was a "universal illness" -- everyone was exposed, but only a small fraction developed severe illness or died. https://www.lung.org/blog/u

I'm sure. Chickenpox was a "universal illness" -- everyone was exposed, but only a small fraction developed severe illness or died. https://www.lung.org/blog/understanding-covid-herd-immunity https://www.lung.org/blog/understanding-covid-herd-immunity