Franzin L, Castellani Pastoris M, Gioannini P, Villani G
Infectious Diseases Department, University of Turin, Italy.
J Hosp Infect. 1989 Apr;13(3):281-8. doi: 10.1016/0195-6701(89)90009-1.
A microbiological and epidemiological investigation at the Infectious Diseases Hospital in Turin, Italy, demonstrated Legionella pneumophila serogroup 3 at 10(2) to greater than 4 X 10(3) cfu l-1 from 24 of 32 hot water samples collected from hand-basins in six separate buildings. A sample taken from the public water supply, and a hot water sample (80 degrees C) collected from hot water tanks, did not yield legionellas. Legionella pneumophila serogroup 3 was found in samples taken at the first point of mixed hot and cold water (50 degrees C) at 3 X 10(2) cfu l-1. 12 of 26 samples from the shower-heads yielded 10(3) to 2.5 X 10(5) cfu l-1 and one of 12 water samples from oxygen bubble humidifiers tested yielded 1.6 X 10(4) cfu l-1. No other legionellas species or serogroups of Legionella pneumophila were isolated during the study. No cases of nosocomial pneumonia were detected among 3653 patients' records, nor was there serological evidence of Legionella infection in the 180 patients tested.
意大利都灵传染病医院开展的一项微生物学和流行病学调查显示，从6栋不同建筑的洗手盆采集的32份热水样本中，有24份样本的嗜肺军团菌血清型3含量为10²至大于4×10³ cfu/l⁻¹。从公共供水系统采集的一份样本以及从热水箱采集的一份热水样本（80摄氏度）未检测出军团菌。在冷热水混合的第一个点（50摄氏度）采集的样本中发现嗜肺军团菌血清型3，含量为3×10² cfu/l⁻¹。26份淋浴喷头样本中有12份的含量为10³至2.5×10⁵ cfu/l⁻¹，12份氧气泡加湿器水样中有1份的含量为1.6×10⁴ cfu/l⁻¹。研究期间未分离出嗜肺军团菌的其他菌种或血清型。在3653份患者记录中未检测到医院获得性肺炎病例，在180名接受检测的患者中也没有嗜肺军团菌感染的血清学证据。
