title: Effect of ultraviolet disinfection of drinking water on the viability of Cryptosporidium parvum oocysts.
abstract: Demineralized water was enriched with a known number of Cryptosporidium parvum oocysts obtained from fresh calf feces, which were purified and exposed to ultraviolet (UV) light (15,000 mW/sec) for different lengths of time. Coccidium-free litters of CD-1 neonatal mice then were inoculated intragastrically with the treated water. Seven days postinoculation mice were killed and C. parvum infection prevalence and intensity determined. In mice inoculated with C. parvum-enriched water that had been exposed to UV light for at least 150 min, no infection occurred.
authors.affiliation: Laboratorio de Parasitología, Facultad de Farmacia, Universidad de Santiago de Compostela, La Coruña, Spain.
authors.forename: M J
authors.initials: MJ
authors.lastname: Lorenzo-Lorenzo
authors.forename: M E
authors.initials: ME
authors.lastname: Ares-Mazas
authors.forename: I
authors.initials: I
authors.lastname: Villacorta-Martinez de Maturana
authors.forename: D
authors.initials: D
authors.lastname: Duran-Oreiro
mesh_terms: D000818:Animals; D002417:Cattle; D003457:Cryptosporidiosis / Q000517:prevention & control*; D016785:Cryptosporidium parvum / Q000528:radiation effects*; D051379:Mice; D013047:Specific Pathogen-Free Organisms; D014466:Ultraviolet Rays; D014881:Water Supply