Likely a combination of Mexicans and bloggers.
Please take note of what the writers of this article did not: All of the Whooping Cough, Measles, Entero V68, Refugee Flu, etc. all took of when His Arrogance opened the border. Forget the distraction and fraud about a foreign visitor to Disneyland but consider the millions of Obama illegals brought into the country where the medical personnel hired by Homeland Security are required to sign “confidentiality agreements” about the disastrous medical conditions of the “refugees”.
Better, big-picture charts and info:
http://healthimpactnews.com/2015/the-truth-about-measles-the-mainstream-media-is-suppressing/#
Information to mull over:
I was born in 1960 so I probably got the vaccine between 4 and 6 and have the scar to prove it (you older folks will know what I am talking about). There might have been another round and will ask my Mom about that.
In 1990, at the age of 30, I got the Measles when there was an outbreak in Texas. One, this is not a new thing. An outbreak happened in 1990. Two, the vaccine, for me, had an expiration of effectiveness. Three, there is a week or so of my life I have very little recollection of since I was so sick. :-)
After being infected I thought that vaccines are so new, how do we know how long the effectiveness will be, will new strains develop, etc.