“…Between 1983 (when surveillance for Cryptosporidium began) and 2005, a total of 151 Cryptosporidium outbreaks involving 9893 cases illness were reported to CfI, involving many vehicles for infection, including public water supplies (56 outbreaks), private water supplies (6), swimming pools (44), other recreational waters (7), animal contact and farms (19), food (4), person-to-person spread (10) and unknown (5). Cryptosporidium clearly plays a particular role in waterborne disease, facilitated by many inherent biological features, reported elsewhere (Karanis et al, 2007). In a review of 89 outbreaks of waterborne disease involving 4,321 cases in England and Wales , Cryptosporidium was the causative agent in 69 %.…”