Managing our buildings to minimize the risk of infectious disease transmission is of paramount concern today. Every building and climate are different, making it challenging to have one approach work in all situations. Dr. Bahnfleth provided a critical review of guidance published by ASHRAE and other built environment organizations and discussed their relationship to recommendations of science and health-focused organizations like WHO. Dr. Bahnfleth provided expert insight based on the best research for operations to help mitigate risks and what practices to avoid.