Though measles continues to be a global problem, it was declared "eliminated" in the U.S. in 2000. This was achieved through high vaccination rates, but the American trend toward delaying or refusing vaccinations means the disease is once again on the rise.
So far this year, over 300 measles cases have been reported in the U.S. Most of them can be traced to travelers, who pick up the disease abroad and spread it to unvaccinated pockets of individuals back home.
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Infographic by Alissa Scheller for The Huffington Post.