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  • Title: Detection of Legionella pneumophila at thermal spas.
    Author: Martinelli F, Carasi S, Scarcella C, Speziani F.
    Journal: New Microbiol; 2001 Jul; 24(3):259-64. PubMed ID: 11497083.
    Abstract:
    Water samples were collected at three therapeutic thermal spas in the area of Brescia, between February and October 2000: 34.8% of the samples contained Legionella pneumophila; the predominant isolates (30%) belonged to Legionella pneumophila serogroup 1. The microorganism was present in the spa water at high concentrations, generally higher than 10000 cfu/l. The large number of positive Legionella pneumophila samples indicates a potential risk of infection to patients, especially those undergoing inhalation treatment with thermal water, or those using a whirlpool or taking a shower even if, during the study, no clinical cases of Legionnaires' disease were observed. In some inhalators in use we detected Legionella pneumophila: after a treatment to eradicate the microorganism, no sanitary fittings currently show contamination. Thus, in our opinion, they are not sources of infection when they are mantained and serviced properly. Thermal disinfection and service checks at regular intervals are suggested for contaminated systems.
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