Intestinal nematode infections are caused by worms which at some stage in their sometimes complicated life cycles live as adult worms inside the human gut (intestine). They include (with their contribution to the total deaths from intestinal nematode infections in 2002):
a. Roundworm [Ascariasis] map 400 (29% of deaths).
b. Whipworm [Trichuriasis] map 401 (26% of deaths).
c. Hookworm disease (Ankylostomiasis and Uncinariasis) map 402 (25% of deaths).
d. other intestinal worm infections, no map (20% of deaths).
Intestinal worm infections caused 0.02% of all deaths worldwide in 2002, with an average of 2 deaths per million people.