caa a22 4500 475746988 CHVBK 20180406123516.0 cr unu---uuuuu 170329e20001101xx s 000 0 eng 10.1007/s002840010152 doi (NATIONALLICENCE)springer-10.1007/s002840010152 A Comparison of Legionella pneumophila Occurrence in Hot Water Tanks and Instantaneous Devices in Domestic, Nosocomial, and Community Environments [Elektronische Daten] [Fabrizia Martinelli, Arnaldo Caruso, Lina Moschini, Adolfo Turano, Carmelo Scarcella, Fabrizio Speziani] The aim of this study was to compare the occurrence of L. pneumophila in hot water samples from hot water tanks and instantaneous devices. Tanks and devices were all operated by heat exchangers employed in the town's district heating system. Thirty-six out of 171 (21%) hot water samples tested positive for L. pneumophila isolation, with 14.6% belonging to serogroup 1 and 6.4% to serogroups 2-14. The proportion of L. pneumophila detected in hot water reservoirs (30%) was higher than that observed in hot water instantaneous devices (6.2%). Differences in L. pneumophila isolation reflected different temperatures registered at the faucet: ≤50°C for hot water from reservoir devices, and >60°C for hot water from instantaneous devices. These data emphasize the need to control temperature in hot water distribution devices, thus inhibiting the formation of biofilm and L. pneumophila colonization. Springer-Verlag New York Inc., 2000 Martinelli Fabrizia Public Health Laboratory, ASL, Brescia, Italy, IT aut Caruso Arnaldo Institute of Microbiology, University of Brescia Medical School, Piazzale Spedali Civili 1, 25124 Brescia, Italy, IT aut Moschini Lina Public Health Laboratory, ASL, Brescia, Italy, IT aut Turano Adolfo Institute of Microbiology, University of Brescia Medical School, Piazzale Spedali Civili 1, 25124 Brescia, Italy, IT aut Scarcella Carmelo Public Health Laboratory, ASL, Brescia, Italy, IT aut Speziani Fabrizio Public Health Laboratory, ASL, Brescia, Italy, IT aut https://doi.org/10.1007/s002840010152 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s002840010152 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Martinelli Fabrizia Public Health Laboratory, ASL, Brescia, Italy, IT aut NATIONALLICENCE 700 1- Caruso Arnaldo Institute of Microbiology, University of Brescia Medical School, Piazzale Spedali Civili 1, 25124 Brescia, Italy, IT aut NATIONALLICENCE 700 1- Moschini Lina Public Health Laboratory, ASL, Brescia, Italy, IT aut NATIONALLICENCE 700 1- Turano Adolfo Institute of Microbiology, University of Brescia Medical School, Piazzale Spedali Civili 1, 25124 Brescia, Italy, IT aut NATIONALLICENCE 700 1- Scarcella Carmelo Public Health Laboratory, ASL, Brescia, Italy, IT aut NATIONALLICENCE 700 1- Speziani Fabrizio Public Health Laboratory, ASL, Brescia, Italy, IT aut Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer