What Is the Likelihood That a Patient Infected by West

question 70

Multiple Choice

What is the likelihood that a patient infected by West Nile virus will develop West Nile encephalitis?

• A) Less than 1%
• B) Between 1% and 10%
• C) Between 10% and 15%
• D) Greater than 20%
• E) Greater than 50%

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Definitions:

Evolution

The process through which populations of organisms change over generations, driven by mechanisms such as natural selection and genetic drift.

Chordate

A member of a diverse phylum of animals that includes the vertebrates, lancelets, and tunicates. As embryos, chordates all have a notochord (a hollow nerve cord), pharyngeal gill slits, and a post-anal tail. Many present-day chordates lose or modify these structures as they develop into adults.

Adult Organism

An organism that has reached its full developmental or mature stage, especially in terms of reproductive capacity.

Structure

The arrangement or organization of parts to form an organism, system, or object, often determining its function and properties.