Changes

There will be volumes written over the coming decades about the long-term changes the COVID-19 pandemic has caused. I don't know of any left over from the Spanish Flu of 1918. Some might say laws against spitting were made then, but those existed already because of tuberculosis, and were tightened up then. 

Maybe in twenty years other things will have eclipsed the pandemic to such a degree that it'll be forgotten. World War II is probably much of the reason the 1918 flu faded in memory. In five years someone will see a public bathroom door handle like the one in the picture above and have to turn some memory gears to recall why it was put there and when, and maybe wonder if it wasn't put there before or after unrelated to the pandemic.