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전철구 ( Jun Chul Ku ),정희생 ( Jung Hee Sang ),김명철 ( Kim Myung Chul ),심동현 ( Shim Dong Hyun ),문화영 ( Moon Hwa Young ),이종태 ( Lee Jong Tae ),서재기 ( Seo Jae Gi ),정철희 ( Jung Chul Hee ) 국군의무사령부 2010 대한군진의학학술지 Vol.41 No.1
Objective: The purpose of this study is to have the basis data for indoor air quality at barracks to prevent soldier's respiratory disease in military Method: We measured the indoor air quality of barracks in concentration with five factors such as airborne microbes, carbon dioxide, fine dust, temperatures and relative humidity at every month from June to August in 2009. We measured the indoor air quality at various time and at the three buildings that were classified year built. Results: The concentration shows significant difference by the inspected time not by the year built of the buildings. The concentration of airborne microbes, carbon dioxide were highest at 11:00 pm (p<0.01), and those of fine dust were highest at night(p<0.01). Temperatures were highest at 3:00 pm (p<0.01), and relative humidity were highest at 9:00 pm (p<0.05). Conclusion: Government rules should be legitimated for engineered ventilation system and periodical estimation of indoor air quality at barracks to prevent soldier's respiratory disease.
서재기 ( Seo Jae Kee ),신현진 ( Shin Hyun Jin ),정희생 ( Jung Hee Sang ),김명철 ( Kim Myeong Cheol ),박수곡 ( Park Su Gok ),정철희 ( Jung Cheol Hee ) 국군의무사령부 2010 대한군진의학학술지 Vol.41 No.1
Objective: To evaluate the safety of the military gas mask through microbiological method. Methods: From October 2009 to November 2009, 140 gas masks from 7 military units were evaluated. We classified the masks into two groups according to frequency of use. Group 1 was defined as the 50 masks of the three military units that had frequent education training. Group 2 was the remaining 90 masks as controls. Samples were obtained at surface of facial part of the masks. Samples after washing with soap and/or sodium hypochlorite (NaClO), samples from water intake port were additionally obtained from 30 masks of group 1. After culture, total number of bacteria and fungus was counted, and then identification of the bacteria was done. Results: At facial part of the masks, bacteria and fungus was detected from all of the masks. Ninety-eight (70.0%) and 110 (78.6%) masks showed more than 100 CFU of bacteria and fungus, respectively. In group 1, the proportion of the samples which showed more than 100 CFU of bacteria and fungus was significantly greater than that of group 2 (P<0.0001 and P=0.0017, respectively). Bacteria and fungus was also detected from all of the water intake port. A total of 15 microorganisms were identified 132 times. Staphylococcus aureus (49 times, 37.1%) was the most common bacteria identified, followed by Enterobacter cloacae (27 times, 20.5%) and Pseudomonas aeruginosa (17 times, 12.9%). After washing, no sample decreased in number of bacterial count. Conclusions: There were many bacteria at the military masks which can cause serious opportunistic infection. Further study needs to establish effective method of sterilizing and sanitizing the gas masks.