The outbreak, centered in the former polygamist Mormon area of Short Creek, is the state's biggest in decades.

An outbreak of measles at the Arizona-Utah border has grown to 123 cases and seven hospitalizations, new data shows.

A measles outbreak in parts of Utah and Arizona not far from Las Vegas has grown to over 130 cases, according to public health officials in both states.

The second-largest measles outbreak in the U.S. this year continues to expand, with 13 new cases confirmed this week.

Just as one large measles outbreak peters out in the United States, another outbreak of the virus has taken off along the ...

Over 100 measles cases surge in Utah and Arizona as declining vaccination rates and exemptions spark concerns over the return ...

A measles investigation amid a large, ongoing outbreak at the Arizona-Utah border has hit a roadblock as the first probable ...

A growing measles outbreak along the Utah-Arizona border has spread to nearby communities, making it the nation's ...

A deadly measles outbreak in Texas ended in August, but outbreaks in other parts of the United States continue to add ...

Measles outbreaks have spread across the U.S. to reach 41 states. The largest ongoing cluster in Utah and Arizona has now grown into the second-biggest outbreak of the year. Utah reported a total of ...

The nation's second largest measles outbreak this year is now spreading beyond its epicenter along the Utah-Arizona border.

At least 123 people have been infected in a growing measles outbreak about 160 miles from Las Vegas along the Utah-Arizona ...