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KMID : 0950020040300010045
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Journal of Health Science & Medical Technology
2004 Volume.30 No. 1 p.45 ~ p.55
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Prevalence and Serological Characteristics of Legionella spp. Isolated in Public Spas
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Kim Young-Hwan
Moon Kyung-Whan
Lee Jang-Hee
Cho Il-Hyung
Kim Mi-Ra
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Abstract
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This study was to determine the prevalence of Legionella species in public spas and to know that the presence of Legionella was correlated with other microbiological parameters. A total of 81 water samples were collected from 30 different public spas and sudatoriums so called zzimzilbang in Korea. Although Legionella was not detected in raw water(tap water) and the cold tub water, of the 38 samples of hot and warm water taken from public tubs, 11 samples(28.8%) were found to be positive for Legionella spp. All of the isolates were identified as a species L. pneumophila serogroups 1 and 2-14 by latex agglutination. The levels of L. pneumophila were fairly distributed over a broad range of concentrations from ＜10² cfu/㎖ to 10⁴ /㎖, with 1 of a spas in the ＜100 cfu/㎖, 4 spas in the 10² to 10³ cfu/㎖, and 2 spas had levels of culturable L. pneumophila. ＞104 cfu/㎖. And HPC concentrations in all spa waters isolated Legionella were above the level of 104 cfu/ml. Total coliforms were detected in 45% of the samples and were grew in even raw water. But total coliform was not detected in the majority of Legionella-positive samples. The correlation between the presence of Legionella and total coliforms was not showed in the tub water. On the basis of these results, it would appeared that Legionella proliferate primarily in inadequate tubs to control the total bacteria numbers.
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KEYWORD
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Legionella, public spa water, HPC bacteria
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