How herd immunity works

The biggest problem that results from more and more people subscribing to antivaccination lunacy – actually, the one and only problem with not receiving people vaccinations, really – is a slow but steady decrease in herd immunity, the phenomenon where the more people are immunized to a disease, the harder it is for said disease to pop up and spread around and harm or kill people, especially weaker individuals such as seniors and infants. Here’s a handy and simple little video from Chain of Protection, a vaccines educative website, showing you the basics of how it all works:

Herd Immunity - How it works from Chain of Protection on Vimeo.

Get vaccinated, save babies’ lives. Hard to think of a better encouragement than that.

(via Bad Astronomy)

Tags: vaccines • vaccination • Chain of Protection • anti-vaccination • herd immunity