Capillaria (=Calodium) hepatica

Capillaria (=Paracapillaria) philippinensis

Capillariasis

Cercarial dermatitis (Swimmer's Itch)

Chagas disease (American trypanosomiasis)

Chilomastix mesnili

Cimex hemipterus

Cimex lectularius

Clonorchis sinensis

Clonorchiasis

Cochliomyia hominovorax

Coenurosis

Cordylobia anthropophaga

Cryptosporidiosis

Cryptosporidium spp.

Cuterebra spp.

Cyclospora cayetanensis

Cyclosporiasis

Cysticercosis

Cystoisospora belli

Cystoisosporiasis