The useful idea
- The useful idea
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.
- How it works
It occurs when a sufficient percentage of a population has become immune to an infection, whether through previous infections or vaccination, that the communicable pathogen cannot maintain itself in the
- Why it matters
population, its low incidence thereby reducing the likelihood of infection for individuals who lack immunity.
Why this matters
Use Herd immunity to ask clearer questions; personal health decisions still belong with a qualified professional.
Try this
Use Herd immunity to ask clearer questions; personal health decisions still belong with a qualified professional.
Test your recall
Which idea belongs to the explanation of Herd immunity?
- Why it matters
- How it works
- The useful idea — correct
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.
General education only — not medical advice, diagnosis, or treatment.