Concentrations of airborne culturable bacteria in 100 large US buildings from BASE study

This paper is a presentation of statistics made by the US environmental protection agency BASE. A standardized protocol was used to measure bioaerosols whose air samples were collected in 100 large US office buildings in 1994-1998. A normative data on indoor environmental quality was thus obtained. Bacterial concentrations were compared by incubation temperature, location, season, and climate zone.