UV inactivation of Cryptosporidium hominis as measured in cell culture.
The Cryptosporidium spp. UV disinfection studies conducted to date have used Cryptosporidium parvum oocysts. However, Cryptosporidium hominis predominates in human cryptosporidiosis infections, so there is a critical need to assess the efficacy of UV disinfection of C. hominis. This study utilized cell culture-based methods to demonstrate that C. hominis oocysts displayed similar levels of infectivity and had the same sensitivity to UV light as C. parvum. Therefore, the water industry can be confident about extrapolating C. parvum UV disinfection data to C. hominis oocysts.
Johnson
Anne M
AM
The Metropolitan Water District of Southern California, Water Quality Laboratory, 700 Moreno Avenue, La Verne, CA 91750, USA.
Linden
Karl
K
Ciociola
Kristina M
KM
De Leon
Ricardo
R
Widmer
Giovanni
G
Rochelle
Paul A
PA
D000818:Animals; D002460:Cell Line; D003458:Cryptosporidium / Q000528:radiation effects*; D004203:Disinfection; D006801:Humans; D033661:Oocysts / Q000528:radiation effects; D014466:Ultraviolet Rays