Hookworms & Strongyloides

• What is the name of New world hookworm?

  Necator americanus
• What is the name of Old world hookworm?

  Ancylostoma duodenale
• Identify the picture


  Ancylostoma duodenale

  
• Identify the picture


  Necator americanus

  
• Common name of N. americanus

  New world hookworm
• Common name of A. duodenale

  Old world hookworm
• Shape of N. americanus

  S-shaped
• Shape of A. duodenale

  C-shape
• Buccal cavity of N. americanus

  Semilunar cutting plate
• Buccal cavity of A. duodenale

  2 pairs of teeth
• Copulatory bursa of N. americanus

  BIPARTITE or BIDIGITATE
• Copulatory bursa of A. duodenale

  TRIPARTITE OR TRIDIGITATE
• Spicule of N. americanus


  Barbed, fused
• Spicule of A. duodenale


  Not barbed, Bristle-like
• Identify the picture


  N. americanus

  
• Nonfeeding stage of Strongyloides

  Strongyloides Filariform Larva
• Similar to the filariform larva of hookworm but is usually smaller and has a notched tail

  Strongyloides Filariform Larva
• Identify the picture


  Strongyloides Filariform Larva

  
• egg with CHINESE LANTERN APPEARANCE

  Strongyloides stercolaris
• Identify the picture


  Egg of S. Stercoralis

  
• Habitat of Strongyloides stercoralis

  Small intestine
• Final host of S. stercoralis

  Man
• Diagnostic stage of S. stercoralis

  Rhabditiform larva
• Infective stage of S. stercoralis

  Filariform larva
• Honeycomb appearance of the intestinal mucosa

  Cochin China Diarrhea
• Diagnosis of Strongyloides stercoralis

  Stool examination
• Treatment of Strongyloides


  Albendazole
• Common name of Strongyloides stercoralis


  Threadworm
• VULVA Of strongyloides is located at what length of the body?

  1/3
• Slender tapering anterior end and short conical posterior end

  Strongyloides stercoralis
• Slightly SMALLER and less ATTENUATED than hookworm

  Strongyloides Rhabditiform Larva