Hookworm (manifesting as Cutaneous Larva Migrans)
Ancylostoma braziliense or Ancylostoma caninum
- Order & Family
- Order: Strongylida; Family: Ancylostomatidae
- Size
- Larvae are microscopic (approx. 0.5 mm), but the visible red tracks on skin can grow several centimeters in length.
Natural Habitat
Tropical and subtropical regions; larvae are typically found in warm, moist soil or sand contaminated with feces from infected dogs or cats.
Diet & Feeding
The adult worms feed on blood in the intestines of their primary hosts (dogs/cats); in humans, the larvae wander aimlessly through the skin layers as they cannot complete their life cycle.
Behavior Patterns
Larvae penetrate the skin upon contact and migrate under the surface, creating winding, snake-like red burrows that move 1-2 cm per day. They usually cause intense itching (ground itch).
Risks & Benefits
Risk: Causes intense itching and localized skin infection (Cutaneous Larva Migrans) in humans; if you suspect an infection, you should consult a healthcare professional for diagnosis and treatment. Benefit: No benefits to humans; they are parasitic organisms.