#indoorair2022. Giorgio Buonanno. Plenary. In 2020, airborne modeling tools "came out like mushrooms". Most all tools used Wells-Riley and box models and assumed accurate input parameters. 1/4
Quantum = dose of airborne particles required to cause infection in 63% of individuals. Experimental validation demonstrated that volume of particle emission is main contributor to uncertainty. 2/4
Retrospective study in Italy of >10,000 classrooms. Classrooms with ventilation 1.4-10 L/s/person and >10 L/s/p. Risk reduction was 80% in higher ventilated classroom. 3/4 
Tools can show how to reduce risk on building and activity specific scales, allow sensitivity analysis of parameters, and provide public health guidance. However, tools are limited by modeling approaches and reliability of input parameters. 4/4
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