Una Ryan

This report provides a review of the literature on Cryptosporidium and helps to identify the findings and formulates the key research questions. It covers these central questions:

- What are the sources/carriers of human pathogenic strains and what are the key species for a range of catchments?

- What is the contribution of pre and post weaned cattle and sheep to catchment contamination?

- What data on animal management practices (including vegetation management of riparian zones) is available?

- What are the different climatic zones across catchments and how will this impact on the survival and transmission of Cryptosporidium?