1. What is the role of plerocercoid larvae in the life cycle of Diphyllobothrium latum?
2. Which diagnostic methods are used to confirm diphyllobothriasis infection?
3. How long can adult Taenia tapeworms live in the human small intestine?
Diphyllobothriasis — epidemiology?
Distributed worldwide, linked to raw freshwater fish.
Diphyllobothrium latum — morphology?
Longest human tapeworm, 3-10 meters, 3000+ proglottids.
Life cycle — key stages?
Eggs hatch, ingested by copepods, fish, then humans.
Clinical signs — mild infection?
Abdominal discomfort, weight loss, malnutrition.
Diagnosis — methods?
Stool ova exam, blood count, B12 levels.
Taenia solium vs T. saginata — difference?
T. solium has hooks; T. saginata does not.
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