At least 124 cases of measles have been reported in Texas since late January — marking the largest outbreak in the state in close to 30 years. The dozens of reported cases have mostly affected children,

The surge in measles cases in Texas began in late January when two cases were reported in Gaines County, as reported by The Houston Chronicle. Since then, the number of cases in Gaines County reached 80,

Texas reported 90 cases this week, while New Mexico reported nine. A majority of the cases have been in a Texas county where vaccination rates have lagged behind the rest of the state.