Commonality for North America is common
Commonality for Zimbabwe is uncommon
Commonality for Central America is uncommon
Commonality for Central Africa is uncommon
Commonality for Sub Saharan Africa is uncommon
Commonality for North Africa is common
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Ascariasis is an infection of the intestines caused by the roundworm Ascaris lumbricoides. Highly prevalent in tropical or subtropical regions with poor levels of sanitation, ascariasis is the most common roundworm affecting humans. It is estimated that approximately one quarter of the world’s population has ascariasis.

Worms enter the host’s system in the form of eggs, which can be found in contaminated food. The eggs are able to survive for years in soil, and will contaminate fruit or vegetables grown in the soil. Once swallowed, the eggs hatch, and the larvae become established in the small intestine. The worms live for up to two years; during which time they will lay eggs to be excreted in the stool.

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