Abstract
This report describes the results from an investigation of indoor environment, contamination state of a microbe by Andersen sampler, and Gram staining in two houses in Kitakyushu-city.
The main conclusions obtained from this research are as follows. (1) The airborne bacteria concentration became high in the room where the resident was staying for a long time, and the airborne fungi concentration was high in the room where the windows were kept open frequently. (2) As a result of gram staining, the kinds of airborne bacteria are different by house. It seems that this is affected by the lifestyle.