parvum is that different researchers may use oocysts from different sources. Furthermore, Cryptosporidium is more resistant to conventional chlorine disinfection than most other microorganisms, so research in the development of effective treatment technologies for the removal and/or disinfection of Cryptosporidium has also been a matter of high priority for the drinking water industry.Īn issue often neglected in research with C. The quantification of Cryptosporidium in drinking water supplies is often problematic, and much research has focused on the detection and analysis of Cryptosporidium. Lawsuits arising from this incident are still in litigation. The Milwaukee, Wis., outbreak of April 1993 infected as many as 400,000 individuals, making it the largest waterborne disease outbreak in U.S. It is the etiological agent for cryptosporidiosis, a parasitic infection that causes severe gastrointestinal illness which is potentially fatal among immunocompromised individuals ( 4, 6, 7, 15 /crypto.htm). Cryptosporidium parvum is an obligate protozoan parasite found in surface waters.
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