'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. WHO supports achieving 'herd immunity' through vaccination, not by allowing a disease to spread through any segment of the population, as this would result in unnecessary cases and deaths.
What will it take to finally halt the spread of the coronavirus in the U.S.? To answer that question, we've created a simulation of a mock disease we're calling SIMVID-19.