CESTODES 2

• TAENIA SOLIUM COMMON NAME : PORK TAPEWORM
• taenia solium mode of transmission : ingestion of measly pork
• taenia solium Infective stage: Cysticercus cellulosae
• taenia solium intermediate host : Pig,Human
• taenia solium definitive host : human
• diagnosis of taenia solium and saginata : Fecalysis or Scotch Tape Swab
• Drugs of Choice for taenia solium and saginata : Praziquantel 10-20 mg/kg single dose
• TAENIA SAGINATA COMMON NAME: BEEF TAPEWORM
• Infective stage of Taenia Saginata : Cysticercus bovis
• Taenia Saginata mode of transmission: Eating of insufficiently cooked beef
• Taenia Saginata intermediate host : cattle
• taenia saginata definitive host : humans
• Taenia saginata and solium Species differentiation: examination of gravid segment between 2 slides
• taenia spp ova morphology: oncosphere with three pairs of hooklets
• T. Saginata: Unarmed; no hooks or rostellum with 4 acetabula
• T. Solium smaller and more spherical with 4 acetabulla , cushion like rostellum double crown of large and small hooks
• Taenia solium : Has accessory ovarian lobe > No vaginal sphincter > Less follicular testes
• Taenia saginata : Square-shaped with male and female reproductive organs > Two large lobes of ovaries and median club shaped uterus; vagina with sphincter
• T. saginata : Uterus with 15-20 lateral branches > T. solium : Uterus with 7-14 lateral branches
• hymelopeis nana is also known as dwarf tapeworm
• echinococcus granulosus is the smallest tapeworm
• mode of transmission of hymenolepis nana is Ingestion of embryonated egg (direct) or flour beetle (indirect)
• hymenolepis nana Infective stage: Cysticercoid larvae
• Intermediate host of hymenolepis nana : Rat Flea, Dog Flea, Human Flea Rice and Flour Beetles, Cockroaches
• Definitive host of hymenolepis nana : Human, Rat
• HYMENOLEPIS DIMINUTA common name : rat tapeworm
• Infective stage of hymenolepis diminuta: Cysticercoid larvae
• INTERMEDIATE HOST OF HYMENOLEPIS DIMINUTA : Flea, beetle, earwig, mealworm
• definitive host of hymenolepis diminuta : rat
• accidental host of hymenolepis diminuta : humans
• hymenolepis diminuta with rudimentary rostellum and hymenolepis nana rostellum with 20-30 y-shaped hooklets
• hymenolepis diminuta contains a sac like-uterus filled with eggs. ▪ Disintegrate when separated from the body then release eggsContains a sac like-uterus filled with eggs
• hymenolepis nana testes and ovary disappear while uterus hollows out and becomes filled with eggs
• Ileum is the habitat of adult hymenolepis nana
• upper part of small intestine is the habitat of hymenolepis diminuta
• hymenolepis nana has autoinfection, hymenolepis diminuta no auto infection
• raillietina garrisoni common name is madagascar tapeworm
• Infective stage of Raillietina garrisoni: Cysticercoid larvae
• intermediate host of raillietina garrisoni is ants , Tribolium confusum
• definitive host of raillietina garrisoni is rats