(USATODAY) — A measles outbreak that started at Disneyland in California is spreading further across the country and into Mexico as people who were infected on their vacations take the virus home to unvaccinated family members.
More than four dozen people in four states have been diagnosed with measles related to Disneyland or the adjacent Disney California Adventure Park in Orange County.
As the first measles patients create new clusters of disease, "I think we'll see some satellite outbreaks," says William Schaffner, an infectious disease expert and professor at the Vanderbilt School of Medicine in Nashville. "It's going to take a while to control."
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