Schools are definitely among the highest densely occupied indoor environments with continuous occupation. According to the present knowledge about airborne carried diseases, the infection risk for SARS-CoV-2 could reach significant values especially under poor ventilating conditions. The infection risk can be reduced by dilution of the viral agent concentration, provided by air-change, whether by infiltration, manual aeration (windows opening) or mechanical ventilation. The present work, after a brief survey on ventilation requirements for schools in Italy, compares different strategies to account for dilution both in terms of infection risk control and of energetic and comfort aspects. The paper is split into two parts: this part 2 examines air quality and Sars-CoV-2 risk assessment, while the first one dealt with energetic aspects. Each part has its own specific nomenclature and methodology..

The full article is available at the following link: http://www.aicarrjournal.org/cont/journals-articles/872/volume-october-theoretical-study-change-italian.asp