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Occurrence of Legionella in beach shower facilities.

It has been analyzed 36 samples of water proceeding from beach shower facilities: 7 of these were found to be contaminated with Legionella (19.44%). In three showers, L. pneumophila 1 was reported, in two L. pneumophila 2-14; in another two cases L. pneumophila 2-14 was found together with Legionella sp. and L. pneumoplhila 1 together with L. pneumophila 2-14. This study, which confirms the circulation of Legionella in our region of southern Italy, extends the list of the possible sources of infection, including also public and private beaches among the contaminated sites. It is the Authors opinion that when evaluating the risk in these cases we should take into account that the crowding of the beaches in the summer months and the communal nature of shower use in these periods increases the frequency of exposure of children and old people. These vulnerable categories are significantly more likely to develop the disease once infected.