Humans usually acquire fascioliasis by ingesting which infective stage of Fasciola hepatica?
Correct answer: C. Metacercariae on aquatic plants
- A. Cercariae in fresh milk
- B. Eggs in raw meat
- C. Metacercariae on aquatic plants
- D. Adult flukes in dry fodder
Explanation
The metacercaria is the encysted infective stage found on aquatic vegetation such as watercress. Fasciola eggs pass in feces, but they must develop through an aquatic snail host before metacercariae form.
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About Veterinary Public Health and Zoonoses
Veterinary public health examines how animal health affects human health through zoonotic diseases, food safety, environmental sanitation and population disease control. Coverage includes rabies, brucellosis, tuberculosis, anthrax, avian influenza and parasitic infections, along with their reservoirs, routes of transmission, surveillance, vaccination, quarantine and prevention under the One Health approach.
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