Quantitative Microbial Risk Assessment for Airborne Transmission of SARS-CoV-2 and the Efficacy of Ultraviolet Germicidal Irradiaton (UVGI) Systems

To assess the performance of both treatment on reducing the infection risk, this study developed the Indoor Air Quality (IAQ) model that simulates the dynamics of airborne infective SARS-CoV-2 in a 500 m3 with or without mechanical ventilation and UV system. Then this model was linked to a quantitative microbial risk assessment (QMRA) to allow for estimation of the risk of disease transmission for a given treatment condition.