a1 Department of Preventive Animal Medicine, College of Veterinary Medicine, Universidad de Chile, Santa Rosa Avenue, 11735, La Pintana, Santiago, Chile
Cryptosporidium is considered to be one of the indicators of environmental contamination and water quality (Garcia 2001, Fayer 2004, Ramirez & Sreevatsan 2006). At the present time the presence of this parasite has been recorded on all the continents, including Antarctica (Fredes et al. 2007a).
(Received June 14 2007)
(Accepted February 04 2008)