ENH 610 Study Guide - Final Guide: Taenia Saginata, Taenia Solium, Diphyllobothrium

• School: Ryerson University
• Department: Environmental Health
• Course: ENH 610
• Professor: Corrine Ong

Document Summary

Definitive host: humans: usually mild epigastric discomfort, nausea, flatulence (gas, farting), diarrhea, active passing of proglottids in feces, similar to taenia sagniata. Ingestion of eggs or gravid proglottids result in cysts forms causing serious disease: cysticercosis: larvae form cysts in extra-intestinal sites, cysts in the brain . Infection usually limited to 1 worm: mostly asymptomatic or mild symptoms, abdominal discomfort, diarrhea, vomiting, weight loss. Intestinal obstruction with a large number of worms: gall bladder disease, pernicous anemia. Rare in north america (expect on cattle feedlots with inadequate human sewage disposal. Cysticercosis: is transmitted: directly by eating eggs from individuals infected with adult worm i. e. faecal/oral route, or indirectly through food or water contaminated with eggs, or by autoinfection from poor hand hygiene. Rare in north america: mainly in rural areas with poor sanitation where free-range pigs roam freely and feed on human feces associated with this tapeworm, worm has a striking affinity for vitamin.