Effect of batch-process solar disinfection on survival of Cryptosporidium parvum oocysts in drinking water.
The results of batch-process solar disinfection (SODIS) of Cryptosporidium parvum oocysts in water are reported. Oocyst suspensions were exposed to simulated sunlight (830 W m(-2)) at 40 degrees C. Viability assays (4',6'-diamidino-2-phenylindole [DAPI]/propidium iodide and excystation) and infectivity tests (Swiss CD-1 suckling mice) were performed. SODIS exposures of 6 and 12 h reduced oocyst infectivity from 100% to 7.5% (standard deviation = 2.3) and 0% (standard deviation = 0.0), respectively.
Méndez-Hermida
F
F
Department of Microbiology & Parasitology, Faculty of Pharmacy, University of Santiago de Compostela, Santiago de Compostela, Spain.
Castro-Hermida
J A
JA
Ares-Mazás
E
E
Kehoe
S C
SC
McGuigan
K G
KG
D000818:Animals; D016785:Cryptosporidium parvum / Q000302:isolation & purification / Q000472:pathogenicity / Q000528:radiation effects*; D004203:Disinfection / Q000379:methods*; D051379:Mice; D033661:Oocysts / Q000302:isolation & purification / Q000528:radiation effects*; D013472:Sunlight; D013997:Time Factors; D014774:Virulence / Q000528:radiation effects; D014867:Water / Q000469:parasitology*; D014881:Water Supply
D014867:Water