卡塔尔的首个研究揭示冷却塔中军团菌数量很高。

First study in Qatar to reveal high Legionella counts in cooling towers.

作者信息

AbuOdeh Raed O, Aziz Hassan A, Moussa Houda, Hussien Samah, Hadwan Tameem, Nasrallah Gheyath K

机构信息

Department of Medical Laboratory Sciences, College of Health Sciences, University of Sharjah, Sharjah, United Arab Emirates.

Academic Affairs, College of Arts and Sciences, Qatar University, Doha, Qatar.

出版信息

East Mediterr Health J. 2017 Dec 14;23(10):703-707. doi: 10.26719/2017.23.10.703.

DOI:10.26719/2017.23.10.703

PMID:29270971

Abstract

Legionella spp. is transmitted from water to humans by aerosol-generating devices, including cooling towers (CTs). There have not been published reports about Legionella in these systems in Qatar. Ten CTs in Qatar University were sampled on a monthly basis. Bacteria were recovered from 90 water samples by filtration and concentration. Legionella DNA copy number (CN) was assessed by quantitative RT-PCR. Legionella DNA was detected in 100% of the samples. The bacterial counts ranged from 0.006 to 199.56 CFU/mL, and critical counts were found in 51 (56.7 %) samples. Moreover, 7 (7.8%) samples showed a count of more than 100 CFU/mL. The highest counts were found in the months of May and June. These results suggest that this organism is found in high number in tested CTs, presenting a potential health risk to the local population.

摘要

军团菌属通过包括冷却塔（CTs）在内的气溶胶生成装置从水传播给人类。卡塔尔尚未有关于这些系统中军团菌的发表报告。卡塔尔大学的10座冷却塔每月进行采样。通过过滤和浓缩从90份水样中回收细菌。通过定量逆转录聚合酶链反应评估军团菌DNA拷贝数（CN）。在100%的样本中检测到军团菌DNA。细菌计数范围为0.006至199.56 CFU/mL，51份（56.7%）样本中发现临界计数。此外，7份（7.8%）样本的计数超过100 CFU/mL。最高计数出现在5月和6月。这些结果表明，在测试的冷却塔中发现这种微生物的数量很多，对当地居民构成潜在健康风险。