Epidemiology of Legionella and Climatic Variables in Seoul, Korea

Sang-Hun Park; Young-Hee Jin; Mi-Jin Ahn; Sung-Hee Han; Hee-Soon Kim; Jin-Seok Kim; Joo-Hyun Park; Chae Kyu Hong; So-Yun Park; Ah-Ryung Oh; Jib-Ho Lee; Il-Young Kim; Yong-Seoung Shin

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저자정보: Sang-Hun Park (Seoul Metropolitan Government Research Institute of Public Health and Environment) Young-Hee Jin (Seoul Metropolitan Government Research Institute of Public Health and Environment) Mi-Jin Ahn (Seoul Metropolitan Government Research Institute of Public Health and Environment) Sung-Hee Han (Seoul Metropolitan Government Research Institute of Public Health and Environment) Hee-Soon Kim (Seoul Metropolitan Government Research Institute of Public Health and Environment) Jin-Seok Kim (Seoul Metropolitan Government Research Institute of Public Health and Environment) Joo-Hyun Park (Seoul Metropolitan Government Research Institute of Public Health and Environment) Chae Kyu Hong (Seoul Metropolitan Government Research Institute of Public Health and Environment) So-Yun Park (Seoul Metropolitan Government Research Institute of Public Health and Environment) Ah-Ryung Oh (Seoul Metropolitan Government Research Institute of Public Health and Environment) Jib-Ho Lee (Seoul Metropolitan Government Research Institute of Public Health and Environment) Il-Young Kim (Seoul Metropolitan Government Research Institute of Public Health and Environment) Yong-Seoung Shin (Seoul Metropolitan Government Research Institute of Public Health and Environment)

저널정보: 대한미생물학회 JOURNAL OF BACTERIOLOGY AND VIROLOGY JOURNAL OF BACTERIOLOGY AND VIROLOGY Vol.49 No.2

발행연도: 2019.6

수록면: 59 - 68 (10page)

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Legionella species are abundant in the built environment and are increasingly recognized as a cause of Legionnaires’ disease (LD). As the number of cases of Legionnaires’ disease acquired by local communities in the Seoul metropolitan area in Korea has been increased, there was concern that changes in environmental factors could affect disease outbreaks. We described the association between climatic variables and occurrence of legionellosis in Korea and Legionella detection rate in Seoul area. A total of 418 cases of legionellosis were reported between 2014 and 2017. There was a seasonal peak in summer. LD continuously occurred from early spring to winter every year and rapidly increased in summer. In the regression analysis, the primary variables of interest- PM2.5 (㎍/㎥), NO₂ (ppb), and a number of the date of issue O₃ warning were not significant except for average temperature (R²=0.8075). The Legionella detection rate in Seoul, Korea showed a trend similar to precipitation (P=0.708, ANOVA). A relatively high proportion of Legionella detection rate was shown, especially cooling tower (17.7%) and public bath (19.3%). This finding is in line with current understanding of the ecological profile of this pathogen and supports the assertion that legionellosis occurs through contamination of water sources.

#Legionella #Climatic variables #Regression analysis

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