Search results
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.
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.
Mar 16, 2022 · What is herd immunity? 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. Vaccination is the best way.
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.
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?
Apr 16, 2021 · What is herd immunity? When most of a population is immune to an infectious disease, this provides indirect protection—or population immunity (also called herd immunity or herd protection)—to those who are not immune to the disease.
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.
Sep 7, 2023 · This is called ‘herd immunity’, 'community immunity' or 'herd protection', and it gives protection to vulnerable people such as newborn babies, elderly people and those who are too sick to be vaccinated. Herd immunity does not protect against all vaccine-preventable diseases.
Sep 13, 2021 · When most of a population is immune to an infectious disease, this provides indirect protection—also called population immunity, herd immunity, or herd protection—to those who are not immune to the disease.
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
