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Bookmark or Share- What Is Herd Immunity? | Infectious Diseases - JAMA NetworkHerd immunity occurs when a significant portion of a population becomes immune to an infectious disease and the risk of spread from person to person decreases; those who are not immune are indirectly protected because ongoing disease spread is very small.
- Herd immunity - WikipediaHerd immunity (also called herd effect, community immunity, population immunity, or mass immunity) is a form of indirect protection that applies only to contagious diseases. It occurs when a sufficient percentage of a population has become immune to an infection, whether through previous infections or vaccination , [1] thereby reducing the ...
- Herd immunity and COVID-19: What you need to knowHerd immunity makes it possible to protect the population from a disease, including those who can't be vaccinated, such as newborns or those who have compromised immune systems. But reaching herd immunity through vaccination against COVID-19 will likely be difficult for many reasons.
- Herd Immunity: History, Vaccines, Threshold & What It MeansHerd immunity means that enough people in a group or area have achieved immunity (protection) against a virus or other infectious agent to make it very difficult for the infection to spread. Immunity happens in multiple ways: through natural infection, vaccination or passive transfer.
- Herd Immunity: Understanding COVID-19 - PMC - National Center for ...Basic Concepts of Herd Immunity. Acquired immunity is established at the level of the individual, either through natural infection with a pathogen or through immunization with a vaccine. Herd immunity ( Box 1 ) stems from the effects of individual immunity scaled to the level of the population.
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