[Determination of the effective water temperature for the reduction of Legionella spp. contamination in health facilities].

In order to find the optimal value of the hot water temperature to be reached so that there is no Legionella spp. at the dispensing points, 920 samples of water at temperature between 54 and 60 Celsius degree were analyzed at the Lugo and Faenza hospitals (Ravenna). Thought the analysis of the linear trendline results indicate that the temperature required is close to 60 degrees but as it's difficult to maintain in old plants, a careful patient's risk assessment needs to be carried out and therefore install antibacterial membrane filters at the dispensers.