Author:Kfir, R; Hilner, C; Du Preez, M; Bateman, BDate:1995The levels of Giardia cysts and Cryptosporidium oocysts in 650 environmental water samples ere investigated. Cysts and oocysts were found in all types of water tested. The presence of Giardia cysts exceeded Cryptosporidium oocysts both in the ...Read more