A Pueblo resident was exposed to a measles outbreak in Mexico during travel and tested positive for the disease. Here's everything you need to know.

There are now three confirmed cases of measles in Colorado. All investigations are ongoing and are typically handled at the county level with support from the state.

The Colorado Department of Public Health and Environment's warning comes after two previous measles cases in Pueblo and Denver. Unlike in those two cases, the Archuleta County resident, an adult whose vaccination status has not been confirmed,