roundworm

…ascariasis typically is caused by A. lumbricoides; the large roundworm of pigs, A. suum, can also cause illness in humans. Although persons infected with Ascaris worms often are asymptomatic, heavy infestation can cause severe complications, particularly in children, who may experience malnutrition, growth stunting, or intestinal obstruction. Ascariasis exists worldwide,

The species Ascaris lumbricoides is probably the most familiar parasite in humans. More than 25 percent of the world’s human population is infected with these worms, and about 20,000 people die of Ascaris infestation yearly. An almost identical worm, often called A. suum, occurs in pigs. It…

Roundworms, particularly Ascaris lumbricoides, may cause intestinal obstruction if present in sufficient numbers. As they mature from the larval state to the adult worm, roundworms migrate through the body, causing ascariasis, an infection characterized by fever, pneumonitis (lung inflammation), cholangitis

…in the treatment of intestinal roundworm infection in humans and domestic animals (including poultry) and against pinworm infection in humans. It is administered orally, in repeated doses, usually as the citrate salt. Its action causes worms to be paralyzed and then eliminated in the stool.