Three Weeks After a River Rafting Trip, Three Family Members

question 13

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

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Definitions:

Classical Economists

Refers to economists from the 18th and early 19th centuries who focused on economic growth, free markets, and the importance of limited government intervention.

Laissez-faire Policies

An economic policy of non-intervention where private parties are free from government restrictions, tariffs, and subsidies.

Classical Economists

Economists from the late 18th and early 19th centuries who believed in free markets, competition, and the self-regulating nature of economies.

Sticky Wages

A situation in economics where wages do not adjust quickly to changes in labor market conditions, often leading to unemployment or surplus of labor.