Dracunculiasis, also known as guinea-worm disease, is caused by a parasitic worm, Dracunculus medinensis, which enters the body through drinking water and emerges through the skin, having grown to a considerable size.

Toxocariasis is a parasitic infection caused by Toxocara canis or roundworms.

Trichinosis is a parasitic disease caused by eating meat infected with the larvae of the roundworm, Trichinella.