Strongyloides stercoralis

Definition

Strongyloides stercoralis is a parasitic nematode causing strongyloidiasis, primarily infecting the gastrointestinal tract. It can cause both asymptomatic and severe, life-threatening infections.

5 Must Know Facts For Your Next Test

1. Strongyloides stercoralis has a unique lifecycle that includes both free-living and parasitic stages.
2. Infection typically occurs through skin contact with contaminated soil.
3. It can cause chronic infections that persist for decades due to autoinfection.
4. Severe cases may lead to hyperinfection syndrome, characterized by widespread dissemination of larvae.
5. Ivermectin is commonly used as an effective treatment against Strongyloides stercoralis.

Review Questions

• What is the primary mode of transmission for Strongyloides stercoralis?
• Describe the lifecycle stages of Strongyloides stercoralis.
• Which drug is most commonly used to treat strongyloidiasis?

Related terms

Helminth: A general term for parasitic worms, including nematodes like Strongyloides stercoralis.

Autoinfection: A process where the parasite re-infects the host without leaving the body.

Hyperinfection Syndrome: A severe condition caused by accelerated autoinfection and larval spread in immunocompromised individuals.