Filtering and UV work to drastically cut transmission in hospitals.
Humans have lost all critical thought so we needed to actually put filters and UV on a ward and observe it, rather than exercising our big ape brains, apparently.
This pandemic gets more and more hilarious every day.
Here is Johns Hopkins saying their wargame from late 2019, which was estimating as part of the game deaths of 65 million, was not a prediction for COVID.
Actually it's probably not a bad prediction of COVID.
Chapters 1-11 are about handwashing and the last chapter says opening a window might be good
JOKING
Would be nice to update healthcare PPE so we don't kill them all, but whats 19 months of raging respiratory pandemic between supranational organization friends