ISSN : 1738-4125(Print)
ISSN : 2287-7509(Online)
ISSN : 2287-7509(Online)
다중이용시설내 냉각탑수 및 실내공기에 존재하는 레지오넬라균 조사
Investigation of L. pneumopila in Water Collected from Air Conditioning Cooling Towers and Indoor Air at Different Public Facilities
Received 21 June 2005, accepted 12 December 2005
Abstract
This study was carried out to investigate the presence of L. pneumophila in indoor air and water collectedfrom 692 air conditioning cooling towers at different public facilities. For these 4 years (2001～2004) ofinvestigation, water samples were collected in high air conditioner operating month (from July to September)at department stores, hotels, offices, hospitals, discount stores, and public agencies. It was found that L.pneumophila was present in water samples from 47 air conditioning cooling towers. The detection rate of L.pneumophila was 7.6% in 2001, 10.7% in 2002, and 9.5% in 2003, respectively. When we compared the 4air conditioner operating months, the highest rate of L. pneumophila detection was obtained in the watersamples of July. The detection rate of L. pneumophila differed among different facilities. The highestdetection rate of 17.9% was found in samples from department stores. L. pneumophila was detectedsimilarly in water samples from hospitals (8.3%) and offices (8.2%). pH, temperature, and turbidity in the 47L. pneumophila positive water samples ranged from pH 7 to 9, from 25℃ to 38℃, and from 1.0 to 3.5,respectively.
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