Questions: The principle where most of the population is immune to a particular pathogen thus protecting those who are not from encountering the pathogen is known as herd immunity primary immunity vaccine secondary immunity

The principle where most of the population is immune to a particular pathogen thus protecting those who are not from encountering the pathogen is known as herd immunity primary immunity vaccine secondary immunity
Transcript text: Question 4 1.5 pts The principle where most of the population is immune to a particular pathogen thus protecting those who are not from encountering the pathogen is known as $\qquad$ herd immunity primary immunity vaccine secondary immunity
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Solution

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The answer is the first one: herd immunity.

Explanation for each option:

  • Herd immunity: This is the correct answer. Herd immunity occurs when a significant portion of a population becomes immune to a disease, either through vaccination or previous infections, thereby reducing the likelihood of disease spread. This provides indirect protection to those who are not immune.

  • Primary immunity: This term generally refers to the initial immune response that occurs when the body first encounters a pathogen. It is not related to the concept of population-level immunity.

  • Vaccine: A vaccine is a biological preparation that provides active acquired immunity to a particular infectious disease. While vaccines contribute to herd immunity, the term "vaccine" itself does not describe the population-level protection.

  • Secondary immunity: This term usually refers to the enhanced immune response upon subsequent exposure to a pathogen, due to memory cells. It is not related to the concept of herd immunity.

In summary, herd immunity is the principle where most of the population is immune to a particular pathogen, thus protecting those who are not from encountering the pathogen.

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