⟳ Репост от Jim Vanderwal
I don’t understand how this got published. It would be akin to saying “seatbelts don’t save lives” because of a study when people who didn’t use them properly had just as bad injuries as people who didn’t use them at all.
Mark UngrinNot only did only ~12% of participants get in-room HEPA (sharing common areas with the other 1,570 who didn't, with "up to 5" shared HEPAs), in-room HEPAs were only (reportedly) "usually" (which is...not a scientific unit of measure! 🙄) turned on. For "pragmatic" read "sloppy"