A disease caused by a common roundworm. Roundworm is an elongated cylindrical worm about the size of an earthworm, females being slightly longer.
The male can be recognized by a slightly curved hind end. These worms may be found in the intestines where they absorb digested food from the host.
The female lays several thousand eggs per day, which pass out along with the patient's feces. The eggs get scattered in the soil, reaching even vegetables in the fields.
Children playing on the ground may get the microscopic eggs on their hands and the infection can occur by eating with unwashed hands or through unwashed raw vegetables.