What Makes Building Ventilation Good Enough to Withstand a Pandemic?  

As evidence suggesting Covid-19 can spread through aerosol transmission continues to mount, health experts are focused less on sanitizing surfaces and more on improving indoor air quality. In December, the U.S. Centers for Disease Control and Prevention finally put out its ventilation recommendations to combat Covid-19, based on standards set by ASHRAE, or the American Society of Heating, Refrigerating and Air-Conditioning Engineers.