Three Weeks After a River Rafting Trip, Three Family Members

question 8

Multiple Choice

Three weeks after a river rafting trip, three family members experienced symptoms of coughing, fever, and chest pain. During the rafting trip, the family had consumed crayfish that they caught along the river banks. An examination of the patientsʹ sputum revealed helminth eggs, and serum samples were positive for antibodies to Paragonimus. All of the family members recovered following treatment with praziquantel. In the Paragonimus life cycle,

• A) both humans and crayfish are definitive hosts.
• B) humans are the definitive host and crayfish are the intermediate host.
• C) the source of the infection was the river water.
• D) both humans and crayfish are intermediate hosts.
• E) the crayfish are the definitive host and humans are the intermediate host.

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Definitions:

Grave Mounds

Ancient burial sites characterized by large earthen or stone mounds covering graves, often associated with various cultures worldwide.

Enclosures

Physical structures or spaces that are designed to confine or protect what is inside them.

Elegy

A song or poem expressing sorrow, especially for one who is dead.

Sorrow

A deep feeling of sadness or grief that is often caused by loss, disappointment, or other emotional pain.