When Immunization Levels in a Population Are High, _ Provides

question 50

Multiple Choice

When immunization levels in a population are high, _ provides protection from infection for at- risk persons who cannot be immunized.

• A) active immunization
• B) contact immunity
• C) adjuvant therapy
• D) herd immunity
• E) variolation

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Definitions:

Alveoli

Tiny air sacs within the lungs where the exchange of oxygen and carbon dioxide occurs.

Gas Exchange

The process of exchanging oxygen and carbon dioxide between an organism and its environment, fundamental for respiration in living beings.

Larynx

The voice box located in the throat responsible for vocalization, breathing, and protecting the trachea against food aspiration.

Inhaled Dirt

Microscopic particles from the environment that are drawn into the respiratory system during breathing.