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Trichuriasis

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Trichuriasis is a parasitic disease cause by infection of the large intestine by a parasite whipworm (Trichuris trichiura).
The main risk factor for infection is ingestion of eggs from soil contaminated with faeces. Some outbreaks have been traced to contaminated vegetables (due to presumed soil contamination).

The development of symptoms depends on the burden of worms/eggs. Light infestations are frequently asymptomatic, heavy infestations may have bloody diarrhoea, long-standing blood loss may lead to iron-deficiency anaemia, rectal prolepses is seen in severe cases.

Trichuriasis is common worldwide, in particular among countries with warm, humid climates, and primarily affects children.


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Sources:
http://www.answers.com/trichuriasis
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