Copper continues to kill MRSA bacteria af- ter eight inoculations over 24 hours.
24小时内8次感染 后，铜依然可以杀死 MRSA细菌.
“Back in Greek and Roman times, they were using
copper for several health-related applications,” said Jim Michel, manager of technical services for the Copper Development Association (CDA), New York, which spearheaded the campaign for copper’s antimicrobial status. “They didn’t know why, but they knew [copper] did something positive.” For U.S. Environmental Protection Agency (EPA)
registration of the alloys, extensive testing was con- ducted to prove the theory. Now, copper’s health benefits are backed by science. According to the EPA registration, certain copper alloys: • Continuously reduce bacterial contamination, achiev- ing 99.9% reduction within two hours of exposure.
• Kill greater than 99.9% of bacteria within two hours of exposure.
• Deliver continuous and ongoing antibacterial action, remaining effective in killing greater than 99.9% of bacteria within two hours, even after repeated wear and re-contamination.
• Help inhibit the growth of bacteria within two hours of exposure before and after cleaning and sanitizing. Along with standard infection control practices, cop-
per’s antimicrobial properties could have a healthy impact on the spreading of disease-causing bacteria, according to the CDA.
Antimicrobial Copper Applications Copper’s antimicrobial properties will be best used in
applications where surfaces are frequently touched—key areas where disease-causing bacteria can be spread. Ini- tial applications for copper components include IV poles, hospital hardware, such as door handles, and handrails, but prospective applications are varying. Currently, stainless steel is a popular material in hospitals for its clean look, and coatings are often used to achieve a bacteria fighting or neutralizing surface. But coatings wear off, and stainless steel showed no indications of antimicrobial properties in the tests conducted as part of copper’s EPA application. In July 2011, results from a comprehensive, multi-site
clinical trial in the U.S. were presented at the World Health Organization’s first International Conference on Prevention and Infection Control (ICPIC) in Geneva, Switzerland. According to the International Copper Association, the early results of the test demonstrated the use of antimicrobial cop-
健康相关的领域”铜开发协会（CDA）的技术服务经理 Jim Michel说：“他们不知道为什么，但是他们知道铜 有好处”。该协会坐落在纽约，已经开展了几次铜抗菌 活动宣传。
根据美国环保处(EPA)的合金登记情况，一些关于铜 合金的实验已经证明了这个理论。现在，科学已经证明 铜的保健作用。根据EPA的记录，某些铜合金可以： • 持续降低细菌污染，接触2小时可以降低99.9%。 • 接触两小时可以杀死99.9%以上的细菌。 • 具有持续抗菌作用，即使磨损或者重复污染，也能在 2小时内杀死99.9%以上的细菌。
• 不论是否清洗消毒，接触两小时以后都具有抑制细菌 生长的作用。 根据CDA，与标准感染控制手段同时使用时，铜的抗 菌作用可以抑制传染病菌。
铜的抗菌应用
铜的抗菌性能可以用在人们常接触的表面上，即导 致疾病的细菌传播的关键区域。铜件的最初应用包括输 液架和医院的硬件，如门把手、扶手，但未来的应用 前景会有所变化。目前，不锈钢由于干净的外观在医 院很流行，并在表面涂抗菌材料用来抗菌。但涂料磨损 后，EPA对不锈钢和铜的应用测试显示，不锈钢不具有 抗菌性能。
2011年7月，在世界卫生组织在瑞士日内瓦举办的第 一次国际预防和感染控制会议上（ICPIC）发布了美国 进行的全方位临床试验研究结果。国际铜业协会早期的 测试结果表明，在重症监护病房室使用具有抗菌作用的 铜后，在医院感染的风险降低40.4％。
在2012年2月，查尔斯顿市（RMHC）的麦当劳之家 成美国第一个不以营利为目的的临时住所，该住所引入 抗菌铜设施取代钢、木材和塑料接触面。
Spring 2012
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