Occurrence of Free-Living Amoebae and Legionella in Whirlpool Bathes

• KUROKI Toshiro

  Department of Bacteriology and Pathology, Kanagawa Prefe ctural Public Health Laboratory

• SATA Shin

  Department of Bacteriology and Pathology, Kanagawa Prefe ctural Public Health Laboratory

• YAMAI Shiro

  Department of Bacteriology and Pathology, Kanagawa Prefe ctural Public Health Laboratory

• YAGITA Kenji

  Department of Parasitology, National Institute of Infectious Diseases

• KATSUBE Yasuji

  Laboratory of Veterinary Public Health, College of Bioresouce Sciences, University of Nihon

• ENDO Takuro

  Department of Parasitology, National Institute of Infectious Diseases

Bibliographic Information

Other Title

• 循環式浴槽における自由生活性アメーバと<I>Legionella</I>属菌の生息状況
• 循環式浴槽における自由生活性アメーバとLegionella属菌の生息状況
• ジュンカンシキ ヨクソウ ニ オケル ジユウ セイカツセイ アメーバ ト Le

Abstract

Occurrence of both Legionella species and free-living amoebae were surveyed in whirlpool bathes installed in 11 private houses, 8 public bathes and 13 spas. Free-living amoebae that are known to be the hosts of Legionella were isolated from 24 out of 32 water samples (75%). SingleLegionella species, L. pneumophila, with different serogroups (SG) predominantly SG3 (18.3%), SG5 (23.7%) and SG6 (15.8%), were isolated from 21 damples, ranging from 101 to 104CFU/100ml. Further studies were conducted for 10 consecutive weeks to monitor the occurrence of both free-living amoebae and Legionella in the whirlpool bathes of 4 private houses. Free-living amoebae, such as Hartmennella and Vexillifera, and L. pneumophila SG1, SG3, SG4, SG5 and SG6 were consistently isolated from all the water samples throughout the monitoring periods. Bath basins in which Hartmennella and Vannella were isolated tended to harbor large number of Legionella. Management practices such as frequent washing filter elements and/or frequent addition of tap water to bath basins is highly recommened to reduce microbial contaminants.

Journal

• Kansenshogaku Zasshi

  Kansenshogaku Zasshi 72 (10), 1056-1063, 1998

  The Japanese Association for Infectious Diseases

Keywords

• free-living amoebae
• Legionella
• whirlpool bathes

Details

• CRID: 1390001205050902912
• NII Article ID: 130004112608
• NII Article ID: 10008719051
• NII Article ID: 10008719068
• NII Book ID: AN00047715
• DOI: 10.11150/kansenshogakuzasshi1970.72.1056
• ISSN: 1884569X
• ISSN: 03875911
• NDL BIB ID: 4590068
• PubMed: 9847524
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4590068
• Web Site: https://search.jamas.or.jp/link/ui/1999065227
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • PubMed
  • CiNii Articles
• Abstract License Flag: Disallowed