Barrie D, Hoffman P N, Wilson J A, Kramer J M
Department of Medical Microbiology, Charing Cross and Westminster Medical School, London.
Epidemiol Infect. 1994 Oct;113(2):297-306. doi: 10.1017/s0950268800051724.
An investigation into two cases of post-operative Bacillus cereus meningitis revealed that hospital linen laundered by a batch continuous washing machine was heavily contaminated by B. cereus spores. The washing machine, detergents, other chemical additives and the water supply were eliminated as the source of contamination. It was found that the linen introduced into the washing machine had a high B. cereus spore content and that this was still present after the wash process. The spores were not killed by either the heat disinfection stage of the wash or the addition of chemical disinfectants and were not removed by the dilution in the process. The multiplication of B. cereus was thought to have occurred on used, damp linen stored in plastic bags, particularly when ambient temperatures were high. An increase in the water flow through the washing machine was the only measure associated with a decrease in B. cereus on laundered linen.
对两例术后蜡样芽孢杆菌脑膜炎病例的调查显示,由批量连续洗衣机洗涤的医院亚麻布被蜡样芽孢杆菌孢子严重污染。洗衣机、洗涤剂、其他化学添加剂和供水被排除为污染源。发现引入洗衣机的亚麻布蜡样芽孢杆菌孢子含量很高,并且在洗涤过程后仍然存在。这些孢子在洗涤的热消毒阶段或添加化学消毒剂后均未被杀死,也未在该过程中因稀释而被去除。蜡样芽孢杆菌的繁殖被认为发生在储存在塑料袋中的用过的潮湿亚麻布上,尤其是在环境温度较高时。增加通过洗衣机的水流是与洗涤后亚麻布上蜡样芽孢杆菌数量减少相关的唯一措施。