Cryptosporidium is one of the most widespread intestinal parasites and a common cause of severe diarrhoea in immunocompromised people and young children. Cryptosporidium can be found in surface and groundwater sources susceptible to flooding or faecal contamination, and may be present in piped “improved” drinking water systems that use these water sources. Opportunistic infections with Cryptosporidium can cause cryptosporidiosis, a potentially severe and life-threatening illness.
Preventing Cryptosporidiosis: The Need for Safe Drinking Water. R. Peletz, T. Mahin, M. Elliott, M. Montgomery, T. Clasen. 2013. Bulletin of the World Health Organization, 91:4, pp. 238–238A. doi.org/10.2471/BLT.13.119990