Download Risk profile: Cryptosporidium spp in shellfish
There are two pathogenic species of the Cryptosporidium parasite that infect humans; C.
parvum and C. hominis. C. parvum can also infect bovines. When excreted by the host, the
environmental form of Cryptosporidium is the oocyst, which contains four sporozoites, and is
a very resilient organism that can withstand many environmental stresses including
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