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- Dictionaryherd immunity
noun
- 1. resistance to the spread of an infectious disease within a population that is based on pre-existing immunity of a high proportion of individuals as a result of previous infection or vaccination: "the level of vaccination needed to achieve herd immunity varies by disease"
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Mar 16, 2022 · Herd 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.
Dec 31, 2020 · What is ‘herd immunity’? 'Herd immunity', also known as 'population immunity', is the indirect protection from an infectious disease that happens when a population is immune either through vaccination or immunity developed through previous infection.
- 'Herd immunity', also known as 'population immunity', is the indirect protection from an infectious disease that happens when a population is immun...
- Attempts to reach ‘herd immunity’ through exposing people to a virus are scientifically problematic and unethical. Letting COVID-19 spread through...
- Most people who are infected with COVID-19 develop an immune response within the first few weeks after infection. Research is still ongoing into ho...
- Large scale physical distancing measures and movement restrictions, often referred to as ‘lockdowns’, can slow COVID‑19 transmission by limiting co...
Herd 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 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.
- Angel N. Desai, Maimuna S. Majumder
- 2020
Apr 24, 2020 · Herd immunity—or community immunity—is based on the idea that as more people develop immunity to a disease, they help prevent the spread to others who are more vulnerable. How Does Herd Immunity Work?
Jun 1, 2024 · Herd immunity is the name for a point in time when it's hard for a disease to spread through a group of people. The idea of herd immunity works for some diseases, such as measles. But it's a harder concept to apply to illnesses like coronavirus disease 2019 (COVID-19). Read on to learn how herd immunity makes sense for some diseases but not others.
May 5, 2020 · Herd immunity: the indirect protection from infection conferred to susceptible individuals when a sufficiently large proportion of immune individuals exist in a population. Herd immunity threshold: the point at which the proportion of susceptible individuals in a population falls below the threshold needed for transmission
