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| Keywords: Trichinella LifeCycle(French version).GIF Trichinellosis Trichinella spiralis T pseudospiralis T nativa T nelsoni T britovi Traduction en français de l ™image suivante Trichinella_LifeCycle GIF Life cycle of Trichinella spp Trichinellosis is acquired by ingesting meat containing cysts encysted larvae of Trichinella After exposure to gastric acid and pepsin the larvae are released from the cysts and invade the small bowel mucosa where they develop into adult worms female 2 2 mm in length males 1 2 mm; life span in the small bowel 4 weeks After 1 week the females release larvae that migrate to the striated muscles where they encyst Trichinella pseudospiralis however does not encyst Encystment is completed in 4 to 5 weeks and the encysted larvae may remain viable for several years Ingestion of the encysted larvae perpetuates the cycle Rats and rodents are primarily responsible for maintaining the endemicity of this infection Carnivorous/omnivorous animals such as pigs or bears feed on infected rodents or meat from other animals Different animal hosts are implicated in the life cycle of the different species of Trichinella Humans are accidentally infected when eating improperly processed meat of these carnivorous animals or eating food contaminated with such meat http //www dpd cdc gov/dpdx/images/ParasiteImages/S-Z/Trichinellosis/Trichinella_LifeCycle gif PD-USGov Trichinella life cycle biology PD-USGov CDC lifecycles Trichinella life cycle | ||||
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