Reducing healthcare-associated infections is critically important. A new hybrid lighting system technology, designed to provide both visible white light and disinfecting UV-A (λmax = 366 nm) radiation, was retrofitted into a modern hospital newborn intensive care unit. The UV-A dosing was set to levels calculated to be safe for human occupation (maximum of 10 W m−2 for 8 hours at eye level). Eight-hour exposures at 3 W m−2 on newborn intensive care unit counter surfaces were effective for suppressing selected pathogens identified by the Centers for Disease Control and Prevention as problematic for healthcare facilities. Professional staff accepted the hybrid lighting system, although its implementation in this newborn intensive care unit was not completely satisfactory. An analysis of photodegrading effects suggested that UV-A resistant equipment and furnishing may need to be installed with this technology. The present findings should form the foundation for the next generation of this lighting technology.

中文翻译：

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对使用紫外线 A 减轻新生儿重症监护病房中医疗相关感染的混合照明系统的评估

减少与医疗保健相关的感染至关重要。一种新的混合照明系统技术，旨在提供可见白光和消毒 UV-A (λmax = 366 nm) 辐射，被改造为现代医院新生儿重症监护病房。将 UV-A 剂量设置为计算得出的人类职业安全水平（在眼睛水平处，最大 10 W m-2 持续 8 小时）。在新生儿重症监护病房柜台表面以 3 W m-2 照射 8 小时可有效抑制疾病控制和预防中心确定的对医疗机构有问题的选定病原体。专业人员接受了混合照明系统，尽管它在这个新生儿重症监护室的实施并不完全令人满意。对光降解效应的分析表明，可能需要使用该技术安装抗 UV-A 的设备和家具。目前的发现应该为下一代这种照明技术奠定基础。