WASHINGTON — Measles is spreading across the U.S. at rates not seen since the early '90s, and experts at the U.S. Centers for Disease Control and Prevention are urging people to get vaccinated as soon ...

More than 1,700 measles cases have been confirmed in the U.S. so far this year, and the CDC estimates about 1 in 5 unvaccinated people who get it will need hospitalization.

The CDC said 1,792 confirmed measles cases have been reported across the United States as of April 23.

The CDC has put public health agencies on alert for more measles cases in the coming months, warning that increased travel and large gatherings this spring and summer will likely drive numbers higher.

The Centers for Disease Control and Prevention has updated its warning about the risk of contracting measles while traveling, after the agency tallied dozens of cases so far this year in travelers who ...