Classifications

• BASED ON REPRODUCTION

  • Hermaphroditic
  • Self-fertilizing (Monoecious)
  • Infects organs
  • Foodborne
  • Non-hermaphroditic/Schistosomes/Blood flukes
  • Can reproduce via separate sexes (Dioecious)
  • Infects through direct skin penetration
• BASED ON PORTAL OF ENTRY AND HABITAT

  Blood Vessels


  Blood flukes (Schistosoma spp.)

  Fork-tailed cercaria

  • S. mansoni (Rectum)
  • S. haematobium (Urinary)
  • S. japonicum (Intestine)

  MNEMONIC: “MR. HUJI”
• BASED ON PORTAL OF ENTRY AND HABITAT

  Lungs

  • Lung flukes
  • Straight-tailed cercaria
  • Hermaphroditic
  • Depending on species, may attach/encyst on vegetation, fish, crabs, etc.
  • Paragonimus westermani
• BASED ON PORTAL OF ENTRY AND HABITAT

  Liver and Bile Passages

  Liver flukes

  Hermaphroditic

  • Clonorchis sinensis
  • Opisthorchis felineus
  • Fasciola hepatica
• BASED ON PORTAL OF ENTRY AND HABITAT

  Intestines

  Intestinal flukes

  • Fasciolopsis buski
  • Echinostoma ilocanum
  • Heterophyes heterophyes
  • Metagonimus yokogawai
• BASED ON TYPES OF EGG RECOVERED

  Mature Eggs (w/miracidium)

  • Clonorchis sinensis
  • Opisthorchis felineus
  • Schistosoma japonicum/mansoni/haematobium
• BASED ON TYPE OF EGG RECOVERED

  Immature Eggs (w/o miracidium)

  • Paragonimus westermani
  • Fasciola hepatica/gigantica
  • Echinostoma ilocanum
  • Fasciolopsis buski