More on the various measles outbreaks...on pace to be the worst year in 17 years in the US.
http://www.cnn.com/2013/09/12/health/worst-measles-year/index.html?hpt=hp_t2
The Netherlands map diagram is quite simply a fantastic representation.
“
The good thing about science is that it's true whether or
not you believe in it.” ― Neil deGrasse Tyson