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- Title
First study in Qatar to reveal high Legionella counts in cooling towers.
- Authors
AbuOdeh, Raed O.; Aziz, Hassan A.; Moussa, Houda; Hussien, Samah; Hadwan, Tameem; Nasrallah, Gheyath K.
- 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.
- Subjects
QATAR; WATER analysis; AEROSOLS; DNA; LEGIONELLA; POLYMERASE chain reaction; RISK assessment
- Publication
Eastern Mediterranean Health Journal, 2017, Vol 23, Issue 10, p703
- ISSN
1020-3397
- Publication type
Article
- DOI
10.26719/2017.23.10.703