著者

渡邉 好文 名和 肇 小池 直人

出版者

Japanese Society of Environmental Infections

雑誌

環境感染 (ISSN:09183337)

巻号頁・発行日

vol.12, no.3, pp.174-176, 1997-11-28 (Released:2010-07-21)

参考文献数

5

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Studies of the effectiveness of compact size ultraviolet (UV) air disinfection system against airborne bacteria were conducted in patient rooms with 3.15m×5.0m, 3.8m ceiling. The air disinfection systems were activated 24 hrs per one day. Four points of air sampling of 8 ft3 in volume were performed every one week for 3 months. No limitations were applied to incoming/outgoing of patients and medical staffs.Mean colony count of airborne organisms of air samples with UV air disinfection systems off was 4.0±1.9 CFU/ft3, and reduced to 1.4±1.0 CFU/ft3 after UV air disinfection systems on. Rates of 65% reduction of microorganisms were observed under the condition with air disinfection systems activated (p<0.01). Under existence of patients with infected wound, mean colony count of organisms was still increased, from 2 to 10 times higher, after the treatment of wounds.