Somewhere in Orange County, Mary Poppins may be running a fever. The same could be true for her coworkers—an unsuspecting Ariel, say; a suddenly swoony Goofy or Pluto or any of the other 23,000 people (OK, or characters) who punch in for work at Disneyland every day. And the same could be true too for any one of the estimated 16 million people who will pour into the theme park this year.
The reason? Measles. The cause? This may not come entirely as a surprise: the anti-vaccine crowd.