Strongyloides stercoralis

Strongyloides stercoralis is a topic covered in the Johns Hopkins ABX Guide.

To view the entire topic, please or purchase a subscription.

Pediatrics Central™ is an all-in-one application that puts valuable medical information, via your mobile device or the web, in the hands of clinicians treating infants, children, and adolescents. Explore these free sample topics:

Pediatrics Central

-- The first section of this topic is shown below --


  • Helminthic parasite, common worldwide but especially in warmer climes.
    • S. stercoralis is the major pathogen.
    • S. fuelleborni occasional human pathogen, described in Papua New Guinea and Africa.
  • Larvae live in soil. Human infection by contact with contaminated soil.
  • Filariform larvae penetrate skin and enter lymphatics → lung alveoli.
    • Migration from lung to trachea to GI tract/small intestine.
    • Females yield to parthenogenic reproduction with eggs that turn to rhabditiform larvae within the intestine.
    • Cycle yields long-term infection in humans (years-decades, may be considered lifelong).
  • Immunosuppression can yield increased organisms by result of auto-infection → hyperinfection [see life cycle Fig. 1], a potentially fatal condition.
  • Larvae are typically seen ~1 month after exposure.

-- To view the remaining sections of this topic, please or purchase a subscription --

Last updated: May 30, 2016