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What is herd immunity and why is it an important concept in Public Health (PH) Nursing...

What is herd immunity and why is it an important concept in Public Health (PH) Nursing practice?

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Ans) Herd Immunity:
Protection from disease in a group, due to a large enough proportion of the population having immunity to prevent disease from spreading from person to person.

Importance:

- Herd immunity, or community immunity, makes it less easy for communicable diseases to spread, especially to those for whom vaccination is contraindicated. It's an indirect way to protect individuals through vaccination of the public.

- In theory, herd immunity means not everyone in a community needs to be immune to prevent spread of disease. If a high enough proportion of individuals in a population are immune, the majority will protect the few susceptible people because the pathogen is less likely to find a susceptible person.

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