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Strongyloides stercoralis. Life cycle of the nematode (roundworm) from Centers for Disease Control & Prevention website (http://www.dpd.cdc.gov/dpdx/HTML/Strongyloidiasis.htm , accessed 10/18/2013) .3 Autoinfection can occur if the rhabditiform larvae in the large intesting become filariform larvae and penetrate the intestinal mucosa or perianal skin, and then follow the normal infective cycle.
