2. Intestinal nematode infections affect one fourth to one third of the world's population.Of these,the intestinal roundworm Ascaris Lumbricoides is the most common.While the majority of these cases are asymptomatic,infected persons may present with pulmonary or potentially severe gastrointestinal complaints. Ascaris is a worm that lives in the small intestine.Infection with Ascaris is called Ascariasis.Ascariasis is the most common human worm infection.Infection occurs worldwide and is the most common in tropical And subtropical areas where sanitation and hygiene are poor.Children are infected more often than adults
