Karen Cohn, MS, Certified Industrial Hygienist, Senior Public Health Consultant and former Program Manager, San Francisco Department of Public Health’s Children’s Environmental Health Promotion Program, just released a presentation on reducing airborne virus transmission risk. The slides can be found here and here. The presentation includes: what we know about airborne transmission of COVID-19; using ventilation and filtration to reduce airborne transmission; and the role of temperature, humidity, and other factors in COVID-19 transmission. The presentation includes scientific evidence, practical tips, and small group learning activities.