Dioctophymosis (Giant kidney worm infection)

Parasitic Diseases, Nematodes (Roundworms)

Animals Involved

People, nonhuman primates are definitive hosts; infections have also been reported in animals, but parasite identification sometimes uncertain; domestic animals not thought to maintain parasite but possible exceptions (eg, dogs in Chad); copepods are intermediate hosts

Known Distributions

Asia (mainly Indian subcontinent) and Africa

Probable Means of Spreading

Ingestion of infected cyclops in water

Clinical Manifestations in People

No symptoms until just before larviposition (~1 yr); papule to vesicular skin lesion to ulcer that opens in water to reveal worm; allergic reaction common at this time, and secondary infection may occur

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