This webapp helps you estimate the spatially varying infection risk from airborne transmission of the SARS-CoV-2 virus in a rectangular indoor space. The model assumes that the infectious particles carrying the virus are carried around the room by a recirculating airflow, diffused due to turbulence in the air and removed by the room's ventilation system, the natural inactivation of the virus and gravitational settling. For simplicity's sake, the model only considers a single stationary, asymptomatic, infectious person in the room.
For a full write-up of the scientific basis of the model, please refer to our paper.
Disclaimer: The results from this model, including the estimated infection risk, should be used with caution. Many of the inputs are uncertain due to a lack of data and the evolving nature of the virus. Furthermore, this model only calculates the risk of airborne transmission; it does not include the risk of short-range droplet transmission which can be minimized by social distancing. By using this webapp, you acknowledge its limitations and use it at the user's own risk. To the fullest extent permitted by law, the authors of the website and app shall have no liability for any loss or damage suffered as a result of users' use of or reliance on it.