Texas health data released Friday shows an outbreak of measles in the West Texas region has surged to 597 cases.

There have been 800 confirmed cases of measles across 25 states so far this year, according to the latest update from the CDC ...

Half of states in the US are now reporting measles cases, with the national total surpassing 800 cases so far this year, ...

State health officials said fewer than 30 of the cases identified by the state were considered "actively infectious." ...