"The main actions include creating a clean indoor air action plan, optimizing fresh air ventilation, enhancing air filtration and cleaning, and engaging the building community by communicating with occupants to increase awareness, commitment and participation."I hope this conversation filters down (sorry) to our local schools and university. This must be a difficult problem to solve in older buildings—or it's a difficult problem to add to a budget. I haven't seen any signs of this conversation here yet. Also, check out this article in Science from last August: The air investigator.