[Microbiological measurement of air-borne bacteria at an office building].

Following a request of a cleaning firm microbiological measurings were carried out in (large building) office areas. Air was supplied through an air conditioner and all windows were locked and could not be opened. Office employees were on the opinion that illness had increased and felt endangered by colleagues' germs. To find out the reason of these complaints measurings were conducted in various rooms and floors also in the air conditioner. It must be stressed that in spite the continuous air conditioning, almost all doors were open to the corridors. This, declared one of the questioned employees had above all a communication expansion effect.