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KMID : 0382419990250040020
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Korean Journal of Environmental Health Society
1999 Volume.25 No. 4 p.20 ~ p.23
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Distribution and Serological Characteristics of Legionella spp. Isolated from Cooling Tower Waters of Public Establishments in Seoul
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황광호/Whang, Kwang Ho
황영옥/김은정/정지헌/조남준/Hwang, Young Ok/Kim, En Jeung/Jung, Ji Hun/Cho, Nam Joon
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Abstract
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In order to investigate the distribution of Legionella spp. from cooling tower waters of public establishments in Seoul, we examined the 637 cooling tower waters of public establishments(building 220, Hotel 111, Hospital 103, department and shopping centers 103, and others 110) from 1994 to 1998. Of 637 waters tested, the average detection rate of legionella in cooling tower waters of public establishments was 15.7% and according to the establishment, buildings 15.5%, hotels 11.7%, hospitals 12.6%, departments and shopping centers 19.4%, and others 20.0%. Of 637 waters tested, 17 waters(2.7%) were detected over 100,000 CFU/L, 54 waters(8.5%) 10,000∼100,000 CFU/L and 29 waters(4.6%) less than 10,000 CFU/L. Of 100 isolates from cooling towers of public establishments from 1994 to 1998, 95 isolates were L. pneumophila and of them, 83 isolates(87.4%) were serogroup 1. The estimated number of L. pneumophila serogroup 1 isolated from cooling tower waters of public establishments was 6.5×10 exp(4) CFU/L and that in serogroup 4 was 1.8×10 exp(4) CFU/L.
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