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  • Title: [Legionella pneumophila in thermal pools of hot springs in the central Anatolian district].
    Author: Alim A, Hakgüdener Y, Poyraz O.
    Journal: Mikrobiyol Bul; 2002; 36(3-4):237-46. PubMed ID: 12838656.
    Abstract:
    Microbiological contamination of hot spring waters is a public health problem, and hot spring waters have been thought to be a potential source of Legionella infections. In this study, 209 water samples collected from 69 thermal pools of 36 hot springs in the Central Anatolia Region were examined for the presence of Legionella spp. between September and November 2001. The water samples were concentrated via filtration, and the filtrates were decontaminated by low-pH method. Then the samples were cultured on non-selective (Buffered Charcoal Yeast Extract Agar, BCYE) and selective (GVPC; BCYE supplemented with glycine, vancomycin, polymyxin B, cycloheximide, and MWY; BCYE supplemented with glycine, anisomycin, polymyxin B, vancomycin, bromthymol blue, bromcresole purple) media, and suspected colonies were confirmed by Legionella Latex Kit (Oxoid) and direct fluorescent antibody test. As a result, 24 out of 209 (11.5%) water samples were found positive for Legionella pneumophila, and a total 26 L. pneumophila strains were isolated from these 24 samples. Two of these isolates were found reactive with serogroup 1, 20 were reactive with serogroup 2-14 antisera in agglutination test, while 2 samples collected from the same thermal pool, have yielded 2 strains, of which one was serogroup 1 and the other was serogroup 2-14. L. pneumophila was detected in 22.2% of hot springs (8 of 36) and 14.5% of thermal pools (10 of 69). L. pneumophila concentrations which were detected in water samples ranged from 10 to 430 CFU/100 ml. This is the first data for the prevalence of Legionnaires' disease agent in hot spring spas in the Central Anatolia Region of Turkey. Colonization of bacterium in some spas indicates that the certain hot springs might be endemic focuses for Legionnaires' disease in our country.
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