Cryptosporidium (also called ‘crypto’) and giardia are parasites found in the gut of infected people and animals. People infected with cryptosporidium or giardia usually get diarrhoea (runny poo). Some people can get very sick from cryptosporidium or giardia.


A person becomes infected by swallowing the parasites, for example, by drinking contaminated water or touching your mouth with contaminated hands. People or animals who have cryptosporidium or giardia pass on the parasites in their faeces (poo). The parasites can contaminate (make unsafe) soil, food or water, or surfaces such as toys, bathroom taps or doors, and nappy change tables.


Further information

Further information on cryptosporidium is available by visiting the following websites.


Public Health Topics | Recreational Water

Early childhood centres | Fact sheets

Health Ed | Cryptosporidium and Giardia




Last updated 29 September 2023.