A conation of the indoor air risk evaluation by both airborne bacterial concentrations and bacterial flora analyses

为了考虑空气中细菌对健康的影响，对室内和室外空气中的细菌浓度和菌群进行了调查。根据16S rDNA序列对空气细菌群落进行分析，并在会议室、实验室和室外三处对空气细菌区系进行分类。不同季节、不同地点的空气细菌组成不同，但在日常工作人员较多的实验室，常见的是葡萄球菌。然而，在所有分析的克隆中，报告感染病例的物种克隆的检出率不到10%，认为这些房间的空气传播细菌对健康影响的风险较低。

In order to consider the health effects of the airborne bacteria, the bacterial concentrations and the bacterial flora in rooms and outdoor air were investigated. I analyzed the airborne bacterial communities based on the 16S rDNA sequence, and I made the classifications of airborne bacterial flora in three places (Conference room, Laboratory and Outdoor). The airborne bacterial compositions were different from each season and each place, but Staphylococcus was commonly detected in Laboratory where some people worked every day. However, the clones of species that were reported infectious case were detected less than 10% in all analyzed clones, and it was considered that there was low risk for the health effect by the airborne bacteria in these rooms.