The number of U.S. measles cases this year has risen to 141, with most of the new illnesses tied to outbreaks at Disneyland in California and an Illinois day care center. Twenty new cases were added Tuesday to the tally by the Centers for Disease Control and Prevention: 10 in California from the Disneyland outbreak, 8 from the suburban Chicago outbreak at a day care center, and two unrelated cases in Nevada.
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