Tembo Geraldine M, Chaggar Gurpreet K, Li Xiaobao, Teska Peter J, Oliver Haley F
Department of Food Science, Purdue University, West Lafayette, IN.
Diversey Inc, Charlotte, NC.
Am J Infect Control. 2023 Apr;51(4):380-387. doi: 10.1016/j.ajic.2022.07.011. Epub 2022 Jul 19.
Optimization of automated floor disinfection practices using different application methods and product types is important to ensure that pathogens such as Staphylococcus aureus do not transfer from contaminated floors to other high contact areas resulting in healthcare-associated infections (HAIs). We hypothesized that there would be significant differences among the disinfectants and a cleaner under different application methods. Also, performance of application methods would be dependent upon type of product used.
We tested and compared efficacies of 5 EPA registered disinfectants and one cleaner using an automated Taski 455B floor cleaner against S aureus ATCC 6538 on 2 meters of contaminated vinyl flooring using 3 application methods.
Hydrogen peroxide and quaternary ammonium compounds were more efficacious against S aureus than the neutral cleaner. There were no significant differences among the sampling areas tested and application methods regardless of product type. Mean log densities recovered from different machine parts and wastewater collected were statistically higher for the cleaner than disinfectants.
All disinfectants had more bactericidal efficacy than the cleaner for all sampling zones on the tested floor. Overall, performance of the floor machine is dependent upon the type of product used.
优化使用不同应用方法和产品类型的自动地面消毒措施对于确保诸如金黄色葡萄球菌等病原体不会从受污染的地面转移到其他高接触区域而导致医疗相关感染（HAIs）至关重要。我们假设在不同应用方法下，消毒剂和一种清洁剂之间会存在显著差异。此外，应用方法的性能将取决于所使用的产品类型。
我们使用自动Taski 455B地面清洁器，针对2米受污染的乙烯基地板上的金黄色葡萄球菌ATCC 6538，采用3种应用方法测试并比较了5种美国环境保护局（EPA）注册的消毒剂和一种清洁剂的功效。
过氧化氢和季铵化合物对金黄色葡萄球菌的效果比中性清洁剂更好。无论产品类型如何，测试的采样区域和应用方法之间均无显著差异。从不同机器部件和收集的废水中回收的平均对数密度，清洁剂的数值在统计学上高于消毒剂。
对于测试地面上的所有采样区域，所有消毒剂的杀菌效果均优于清洁剂。总体而言，地面清洁机器的性能取决于所使用的产品类型。
