The outbreak, centered in the former polygamist Mormon area of Short Creek, is the state's biggest in decades.
KLAS Las Vegas on MSN
Measles cases grow to 138 in fundamentalist community along Utah-Arizona border
The second-largest measles outbreak in the U.S. this year continues to expand, with 13 new cases confirmed this week.
An outbreak of measles at the Arizona-Utah border has grown to 123 cases and seven hospitalizations, new data shows.
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