Peel M M, Calwell J M, Christopher P J, Harkness J L, Rouch G J
Aust N Z J Med. 1985 Feb;15(1):38-41. doi: 10.1111/j.1445-5994.1985.tb02729.x.
Thirty-four samples of warm waters from 12 psychiatric centres in Victoria and New South Wales were examined for legionellae by guinea-pig inoculation. Legionella pneumophila was isolated from 20 of the samples collected from ten of the establishments investigated. The detected prevalence proportion of L. pneumophila in waters of temperatures 36 to 43 degrees C was 0.9 (18/20), whereas the prevalence in waters of temperatures 45 to 54.2 degrees C was 0.14 (2/14). The two 'positive' waters within the latter range showed evidence of low numbers of L. pneumophila. No significant antibody titres to relevant serogroups were detected in the 112 exposed residents tested from seven psychiatric hospitals in New South Wales. The findings show that the temperature range with the greatest prevalence of L. pneumophila in warm waters is 36 to 43 degrees C. The presence of legionellae in these warm water-distribution systems contrasts with their absence from the water-distribution systems of Victorian hospitals in an earlier survey and underlines the value and simplicity of the usual Australian practice of maintaining hospital hot water temperatures at about 70 degrees C in the control of L. pneumophila.
通过豚鼠接种法对来自维多利亚州和新南威尔士州12个精神病中心的34份温水样本进行了军团菌检测。从所调查的10个机构采集的20份样本中分离出嗜肺军团菌。在温度为36至43摄氏度的水体中，嗜肺军团菌的检出率为0.9（18/20），而在温度为45至54.2摄氏度的水体中，检出率为0.14（2/14）。后一温度范围内的两份“阳性”水样显示嗜肺军团菌数量较少。在新南威尔士州7家精神病医院接受检测的112名暴露居民中，未检测到针对相关血清群的显著抗体滴度。研究结果表明，温水中嗜肺军团菌流行率最高的温度范围是36至43摄氏度。这些热水供应系统中存在军团菌，这与早期一项调查中维多利亚州医院的供水系统中不存在军团菌形成对比，凸显了澳大利亚通常将医院热水温度维持在约70摄氏度以控制嗜肺军团菌的做法的价值和简便性。
