@article{oai:rctoyota.repo.nii.ac.jp:00000164, author = {東野, 督子 and HIGASHINO, Tokuko and 神谷, 和人 and KAMIYA, Kazuhito}, issue = {2}, journal = {日本環境感染学会誌 = Japanese journal of environmental infections, Environmental Infections}, month = {Apr}, note = {Methicillin-resistant Staphylococcus aureus (MRSA)によって療養環境表面が汚染すると,その環境における当該菌の生存期間は数週間におよぶとの報告がある.しかし,入院患者と接触する可能性のある医療器具や患者の療養環境にあるベッド柵やリネンなどに使用される材質の違いによる生存状況についての検討は少ない.我々はS. aureusを用いて,患者の療養環境にある綿布,ポリプロピレン布,シリコーンゴム片,銅片,真鍮片,アルミニウム片,ステンレス片を用いて各材質の違いによる生存状況を,5℃, 20℃, 35℃の異なる温度条件も含めて検討を行った.その結果,ポリプロピレン布,アルミニウム片,ステンレス片では,5℃, 20℃の条件でmethicillin-sensitive S. aureus〔MSSA (ATCC 29213)〕, MRSA (ATCC 43300),医療施設の療養環境から分離されたMRSA〔環境由来MRSA(L1)〕のいずれの菌株も30日後に生存が認められた.綿布においてMSSA, MRSA,環境由来MRSA(L1)の菌株は,5℃, 20℃で15日後の生存が確認されたが,35℃ではいずれも7日後から生存は見られなかった.銅片,真鍮片において,5℃, 20℃, 35℃のMSSA, MRSA,環境由来MRSA(L1)は,いずれも試験菌の付着直後は生存が認められたが,乾燥直後の生存は見られなかった.これらのことからMRSAは,付着した材質の違いによって,生存期間が異なると考えられた.   S. aureusは,付着する材質によっては,長期に生存するため,療養環境における器材や資材を介する接触伝播を阻止するために適切な消毒や清掃等を定期的に行う必要があると考えた., Reportedly, methicillin-resistant Staphylococcus aureus (MRSA) can survive for a few weeks on surfaces in nursing environments. However, the survival of MRSA attached to different materials used in medical devices which may come into contact with inpatients, such as bedside rails, linen, and other equipment in nursing environments, has not been fully discussed. We examined the survival of Staphylococcus aureus (S. aureus) attached to different materials found in nursing environments, such as cotton and polypropylene cloth, as well as silicone rubber, copper, brass, aluminum, and stainless steel, at 5, 20, and 35°C. Among the strains attached to polypropylene cloth or aluminum or stainless steel, methicillin-sensitive S. aureus [MSSA (ATCC 29213)], MRSA (ATCC 43300), and MRSA [environmental-origin MRSA (L1)] strains isolated from nursing environments in the health-care facility survived after 30 days at 5 or 20°C. Among strains attached to cotton cloth, MSSA, MRSA, and environmental-origin MRSA (L1) survived after 15 days at 5 and 20°C, but no strains survived after 7 days at 35°C. Among strains attached to copper or brass, MSSA, MRSA, and environmental-origin MRSA (L1) survived just after attachment in suspension, but no strains survived after drying at 5, 20, or 35°C. These results suggest that the survival of MRSA depends on the attached material. Therefore, adequate disinfection and cleaning of surfaces is essential to prevent transmission of MRSA through equipment or materials in nursing environments, because MRSA may survive for more than 30 days on some metal or nonmetal materials.}, pages = {67--73}, title = {医療施設で使用される資材や器材に付着した Methicillin-resistant Staphylococcus aureus の各種温度条件における生存性}, volume = {26}, year = {2011} }