Herd immunity

This is a type of infection control that occurs naturally, or through immunisation programs, when a large enough portion of a population becomes immune to a disease to stop further spread. Immunity may be either by recovering from the disease or by being vaccinated against it. In the case of COVID-19, the possibility of herd immunity remains unclear due to the uncertainty of long term immunity to this virus.

Glossary health topic:

COVID19 Glossary

Glossary terminology :

Herd immunity