Thinking about how early in the pandemic a bunch of people were saying, roughly, "A COVID infection is only a bit worse than the flu" and how this is turning out to be darkly prophetic in light of our increasing realisation that the long term consequences of catching the flu are way worse than we thought
In light of these it seems ever more incredulous to me that we don't mandate installation of air filtration systems in convention centers, malls and other large indoor spaces where lots of people congregate.