Qualification of the UniBw protection concept in different rooms of the Obermenzinger high school

Kähler, C. J.; Fuchs, T.; Hain, R.

Current research has shown that SARS-CoV-2 is transmitted via airborne particles. These particles are generated when infected persons exhale and they spread throughout the room, resulting in a high concentration and thus a high risk of infection of non-infected persons. One way to reduce the concentration of particles is to filter them using mobile room air cleaners, which can be easily set up and reduce the concentration of viruses or keep them at a low level. Since many studies are conducted in generic rooms, the question of the cleaning performance of such room air cleaners in real rooms arises. In order to investigate this, measurements of the effectiveness were carried out in a total of 4 different rooms of the "Obermenzinger Gymnasium" (Obermenzinger high school) in Munich. It can be shown that good effects of the room air cleaners are achieved even under realistic conditions. Even Plexiglas screens, which serve as protection against direct infection, have no negative influence.