Wow you're right, I can't believe no one ever thought to look at who the measles victims are or where they came from. We need to get you on the phone to the CDC right away so that you can tell them all about your novel and important ideas!
Furthermore, it'd be interesting to examine the measles cases and see what population they come from.
I see an article castigate the antivaxxers and then say most measles occur among unvaccinated populations. Is the article saying the two populations are the same? No solid link is offered, yet the two groups are mentioned together leading a non-careful reader to conclude the antivaxxers are to blame.