immunity by herd

1. Herd immunity
Herd 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, thereby reducing the likelihood of
infection for individuals who lack immunity.

2. • Herd immunity occurs when a large portion of a community (the
herd) becomes immune to a disease. The spread of disease from
person to person becomes unlikely when herd immunity is achieved.
As a result, the whole community becomes protected — not just
those who are immune.

3. • When will we reach herd immunity?
Experts doubt that we will ever reach herd immunity for
COVID-19. Many people in the U.S. and around the world
remain unvaccinated, giving the SARS-CoV2 virus a
chance to spread and mutate.
What are the types of herd immunity?
There are two ways to develop herd immunity: vaccination and previous infection.

4. What is another word for herd immunity?
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.