Thread by @FLAHAULT

1/5 - “In 169 Georgia elementary schools, #COVID19 incidence was 35% lower in 39 schools that improved ventilation through dilution alone and 48% lower in 31 schools that improved ventilation through dilution combined with filtration.”
jamanetwork.com/journals/jama/…

2/5 - “A simulation model found that filtration with 2 high-efficiency particulate air (HEPA) cleaners alone or combined with mask wearing could potentially reduce exposure to infectious particles by an estimated 65% or 90%, respectively.”

3/5 - “Many enhancements to ventilation and filtration can be made at no or low (<$100) cost: opening windows, inspecting and maintaining HVAC systems, and using fans to increase the effectiveness of open windows. Portable HEPA air cleaners can be added for a few hundred $ each.”

4/5 - “Improving air quality has the potential to reduce not only infections with #SARSCoV2 but also infections with other respiratory viruses and bacteria, asthma, inhalation of harmful respiratory particulates (eg, wildfires, smog, volatile organic compounds.”

5/5 - “A once-in-decades opportunity now exists to make sustained improvements to public and private indoor air quality, reduce #COVID19 risk, and improve school, workplace, and consumer health and safety.”