消毒剂擦拭介入对手指微生物转移的影响
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摘要
目的探讨消毒剂擦拭介入对手指微生物转移的影响。方法选择一名受试者对象进行污染物表面-手指转移实验,调查消毒擦拭使用后污染的污染物到手指的微生物转移的变化,将大肠杆菌(10~8～10~9CFU/ml),金黄色葡萄球菌(109 CFU/ml),苏云金芽孢杆菌孢子(10~7～10~8CFU/ml)和脊髓灰质炎病毒1(10~8PFU/ml)接种在瓷砖,层压板和花岗岩上以模拟生活中的情景。结果从未经处理的非转移污染物(4.5～6.9 log10CFU/2 cm~2或PFU/2 cm~2)回收的测试微生物数量显着大于从处理过的非转移污染物中回收的数量(<1.2～2.7 log10CFU/2 cm~2或PFU/所测试的所有类型的微生物和污染物均为2 cm~2(P<0.05),导致log10微生物减少1.9～5.0。苏云金芽孢杆菌孢子的减少总是少于其他微生物(平均log10减少1.9～2.5对比3.5～5.0,表明苏打芽孢杆菌孢子更有可能在消毒擦拭后转移治疗。对于所有类型的微生物和测试的污染物,来自消毒剂-擦拭处理的污染物的所得转移低于未处理的污染物(平均值为≥0.000 2%～0.1%,相对于0.04%～36.3%)。对于所有消毒剂-擦拭处理的污染物,手指上的大肠杆菌CFU的计数均低于10 CFU/cm~2的检测限,这导致所有试验的转移值小于百分比;对于至少一次试验,其他微生物也显示出低于百分比的转移值。结论消毒剂擦拭介入可减少大肠杆菌、金黄色葡萄球菌、苏云金芽孢杆菌孢子和脊髓灰质炎病毒到手指微生物转移。
引文
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