Pythium insidiosum

The division Oomycota mainly consists of two orders. The order Saprolegniales comprises aquatic species, some of which are pathogenic to fish. Representatives of the order Peronosporales mostly occur in soil or as parasites of plants [63]. The latter order comprises one species of clinical significance, Pythium insidiosum [80]. Two members of the order Peronosporales, Phytophthora infestans and Plasmopara viticola, have been implicated as allergenic fungi [81]. 

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