Are we seeing the effects of coronavirus herd immunity or is it dangerous to suggest so? | ITV News

“Herd Immunity” used to be a technical term rarely used beyond the disciplines of epidemiology or vaccine science.

But now it’s one of the most controversial concepts of the coronavirus pandemic.

It’s a simple concept: as a population is being exposed to a virus, people become immune and can no longer spread the bug to others.

Once a certain threshold is reached, there simply won't be enough susceptible people left for the virus to infect and that’s herd immunity.