The AHA rule we all know became AHA+L. (distance, hygiene, everyday mask + ventilation)
This shows that the ventilation factor has long been underestimated. Findings since the beginning of the Corona crisis show that the risk of infection is significantly higher in a closed room than in the open air. Therefore, the motto indoors is: ventilate, ventilate, ventilate. We show you how to best implement your ventilation concept in pandemic times.