As we continue through these winter months, we find ourselves inside for longer periods of time. How can we avoid aerosolized droplets becoming a problem for disease transmission in our public buildings? We have many layers to consider for minimizing risk, but in many ways it starts with the ventilation systems in these buildings. To learn more about the connection between air ventilation and the COVID-19 pandemic, we spoke with Dr. Aurora Le, assistant professor of Environmental Health Sciences at the School of Public Health and an expert on biocontainment and biosafety procedures.