PROBLEM TO BE SOLVED: To prevent not only a situation in which a pathogenic bacterium possessed by an infectious disease patient leaks to the outside, but also to prevent an infectious disease patient from concurrently developing another infectious disease caused by general miscellaneous bacteria. And an air supply / exhaust control device for controlling air supply / exhaust in the room. SOLUTION: An infectious disease room has a room 1, a front room 2 used for entering and leaving the room 2, and a shut-off room 5 arranged between the room 1 and the front room 2, respectively. The atmospheric pressure in the room is maintained so that the patient room 1 is lower than the anterior room 2 and the shut-off room 5 is lower than the patient room 1 so as to have a special negative pressure. [Selection diagram] Figure 1【課題】感染症患者が保有している病原菌が外部に漏れ出る事態を無くすだけでなく、感染症患者が一般の雑菌に起因した別の感染症を併発することを無くすことができる感染症病室およびその室内の給排気を制御する給排気制御装置を提供する。【解決手段】感染症病室は、病室1と、病室２への入退室に用いられる前室２と、病室１と前室２との間に配置されている遮断室５とを有し、それぞれの室内の気圧が、前室２よりも病室１が低く、かつ病室１よりも遮断室５が低い特殊陰圧になるように、保持されている。【選択図】図１
