ABSTRACT
The purpose of the new online tool Fate and Transport of Indoor Microbiological Aerosols (FaTIMA) is to model the fate of infectious aerosols (e.g., those associated with SARS-CoV-2) generated within the built environment and the potential impact of various control measures. Pathogen-containing aerosols can be generated by an infected person through breathing and other activities involving the respiratory system, such as coughing. Larger emitted droplets fall rather quickly to the ground due to gravitational settling;these can impact various surfaces or ballistically enter the respiratory tract of another, nearby occupant. Smaller droplet nuclei can remain airborne for longer periods, and these aerosolized particles are the focus of FaTIMA.