A vaccinated adult from Denver County got the first confirmed breakthrough case of measles, the state health department announced April 25.

Measles cases in the U.S. have surpassed 900 as outbreaks continue to spread across the county, according to new CDC data ...

There have been 935 confirmed cases of measles across nearly 30 states so far this year, according to the latest update from ...

How to talk about vaccines with parents — or anyone — is taking on new urgency: At least 216 U.S. children died of flu this ...

The number of measles cases is approaching 1,000 across 29 states, according to newly released federal statistics. Even as the outbreaks grow, more local governments are complaining that their efforts ...

A federal health agency says the U.S. has 884 confirmed measles cases this year as of Friday. That's triple the amount seen ...

The latest measles update from the CDC reports a total of 935 confirmed cases — the vast majority of which are among patients ...

Colorado on Friday reported its fifth incidence of measles this year, and, for the first time in the spate of cases, the infection was in a person who had been vaccinated against the disease.