Platyhelminthes, Nemathelminthes and Annelida · Zoology

What is the primary mode of infection for the 'Hookworm' (Ancylostoma duodenale)?

  1. Ingestion of undercooked pork containing encysted larvae
  2. Bite of an infected female Anopheles mosquito carrying infective larvae
  3. Active penetration of the skin by filariform larvae
  4. Drinking water contaminated with embryonated eggs passed in faeces
Show answer and explanation

Correct answer: Active penetration of the skin by filariform larvae

Hookworm larvae live in the soil and infect humans by burrowing directly through the skin, usually of the feet. They then travel through the bloodstream to the lungs and eventually the small intestine.

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