translation.en: Outbreaks have been reported in hospitals, day-care centres, within households, among bathers (affecting participants in water sports in lakes and swimming pools), and in municipalities with contaminated public water supplies.
translation.it: Sono state riferite epidemie in ospedali e centri di assistenza diurna, all'interno di nuclei familiari, in piscine e laghi tra bagnanti e appassionati di sport acquatici, e in municipalità con acquedotti contaminati.