The key point is that having a pop'n with vaccinated vulnerable people but unvaccinated younger adults ("the mixers") is the *most likely way* to end up with a covid variant that current vaccines don't work on.

So keep cases as low as possible until *everyone* is vaccinated! https://t.co/JGjeVDp5v0

— Prof. Christina Pagel (@chrischirp) February 25, 2021