Fasciola hepatica and Clonorchis sinensis Quiz

Study Notes

Fasciola hepatica

Pathogenicity: Causes various symptoms including nausea, vomiting, fever, pain, allergic reactions, diarrhea, hepatomegaly (enlarged liver), and eosinophilia.
Complications: Blockage of bile ducts can lead to obstructive jaundice. Severe cases can result in liver cirrhosis (scarring) and hepatic failure. Chronic infection involves liver inflammation with abscess formation (liver rot).
Diagnosis: Detection of eggs in stool or bile (obtained via duodenal intubation). A follow-up stool examination after a week of avoiding raw liver can help confirm or rule out fasciolosis.
Prevention: Avoiding raw/unwashed vegetables, fruits, and contaminated water. Eradication in animal reservoirs, and draining fields to eliminate snail hosts are key preventive measures.

Clonorchis sinensis

Disease: Causes clonorchosis, an endemic and anthropozoonotic parasitic infection.
Geographic Distribution: Primarily found in China and Japan.
Habitat: Infects bile ducts.
Morphology: Adult worms are approximately 1 cm long and narrower than Fasciola hepatica. Eggs are operculated (lidded) and measure 25-30 micrometers.
Life Cycle:
- Definitive host is humans, but also affects dogs, cats, pigs and other mammals.
- First intermediate host: freshwater snails.
- Second intermediate host: freshwater fish.
- Adult flukes release eggs into the intestines via bile ducts, then eggs are passed in stool.

Paragonimus westermani

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Description

Test your knowledge on the pathogenicity, complications, diagnosis, and prevention of Fasciola hepatica and Clonorchis sinensis. This quiz covers important aspects of these parasitic infections, their effects on health, and strategies for prevention. Perfect for students studying parasitology and infectious diseases.