These people also are relying in what is known as "herd immunizations". This means that if a certain percentage of a population is immunized for a disease, then the chances of infection are minuscule. However, the measles requires 95% of the population to be vaccinated for this theory to work. Numbers have now fallen to around 90% in some states and that is the reason for the outbreak.

Last edited by doekiller; 02/04/15 09:49 AM.