Herd Immunity describes a form of indirect protection from disease/infection that occurs in populations with a large percentage of immune individuals. In these cases, the immune individuals act as buffers to help slow or stop the spread of infection. This site utilizes HTML, CSS, and JavaScript to help visualize this effect.

Below you will find 200 yellow cells representing healthy individuals. Use the options below to add infected and vaccinated cells to the sample population. Run the visualization to see resulting deaths. Change your initial parameters to see the effects of herd immunity.