文章基本信息

标题：A 3-Year Follow-Up Study of Anti-Legionella Antibodies in Users of Japanese 24-Hour Hot Water Baths
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作者：Masahiro Irie ; Hiroshi Miyamoto ; Masato Ikeda 等
期刊名称：Journal of Occupational Health
印刷版ISSN：1341-9145
电子版ISSN：1348-9585
出版年度：2004
卷号：46
期号：1
页码：68-77
DOI：10.1539/joh.46.68
出版社：Japan Society for Occupational Health
摘要：Although it has been found that legionellae can exist in a 24-h hot water bath (24HHWB), which has been used recently in Japan, whether longer use of the 24HHWB causes legionellosis is unclear. The present longitudinal study was conducted in 2000 to investigate the 3-yr change in antibody titers in association with the continuous use, non-use, or canceling the use of the 24HHWB, and possible factors relating to the antibody changes. Ninety-two subjects (85 males and 7 females), who had had their anti- Legionella pneumophila (Lp) serum antibody titers measured in our initial study in 1997 and consented to blood sampling 3 yr later, were selected as subjects. There were no clinical cases who had experienced Legionnaires' disease or Pontiac fever during the 3 yr. The continuous users showed no significant changes in antibody titers within 3 yr, whereas the continuous non-users had a significant increase in antibody titers against the Lp serogroup (SG) 5 and 6. Eleven ex-users of the 24HHWB showed a significant decrease in antibody titers against Lp SG 6. The changes in the 24HHWB use, job sector, stress coping strategies, and alcohol-drinking habit were associated with the changes in antibody titers against Lp SG 1, 5 or 6. The anti-Lp antibodies were considered to be IgM dominant. In conclusion, this study indicates that 24HHWB use by healthy subjects does not tend to result in a higher onset risk of legionellosis, even if it is continuously used for 3 yr, although 24HHWB use is likely to induce production of antibodies against legionellae.
关键词：Legionella;Infection;Antibody;Recycled bath water;Stress;Follow-up