Went back into the NBC propaganda piece michigancat (aka I'll believe anything I'm supposed to believe to push my bullshit pov cat), and clicked on the link cited in support.
2013 Measles vaccination rates (per wto unicef):
Mexico - 89%
Guatemala - 85%
So even if you are dumb enough to believe mexico self reports honestly or could even do so accurately, it's still a bullshit stat that only a fool would afford any credence.