Ascariasis, or roundworm infection of the intestines, is common throughout the world in both temperate and tropical areas where sanitation and hygiene are poor. In those areas, everyone may be harboring the parasite that causes the infection.
Ascariasis is one of the most common human parasitic infections. According to the World Health Organization, it infects more than 1 billion people worldwide. Ascariasis is most common in children between 3 and 8 years old.
Last Updated May 12, 2011
Last Reviewed May 12, 2011