"Ventilation is the way forward," says infectious disease doctor Abraar Karan of Stanford. Here's how to get better air flow at home, in schools and offices — even in gyms — to stave off COVID.
The research is clear that air exchange and filtration curb the spread of COVID and other diseases, but upgrading systems is expensive, and there is little federal authority over indoor air quality.
Boosting ventilation and filtration not only lowers the risk of transmission, it's also linked to higher test scores and better health. But making upgrades is more complex than it sounds.