The measles outbreak in West Texas has grown to 58 cases as of Tuesday. Eight people in neighboring eastern New Mexico also have been diagnosed with the highly contagious disease.

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.

Measles outbreaks across Texas and New Mexico have sickened nearly 100 people, with more cases expected, according to state health officials. The disease has spread through the South Plains region of Texas since late January,