This is a cool visual demonstration of the concept.
The concept of herd immunity, and how it breaks down, especially due to personal opinions, is my main research interest. I've published a couple of papers over the years, for those who are interested (all are open access):
The concept of herd immunity, and how it breaks down, especially due to personal opinions, is my main research interest. I've published a couple of papers over the years, for those who are interested (all are open access):
The effect of opinion clustering on disease outbreaks http://rsif.royalsocietypublishing.org/content/5/29/1505.ful...
Assessing Vaccination Sentiments with Online Social Media: Implications for Infectious Disease Dynamics and Control http://www.ploscompbiol.org/article/info:doi/10.1371/journal...
Complex Social Contagion Makes Networks More Vulnerable to Disease Outbreaks http://arxiv.org/abs/1211.0518