The measles outbreaks in West Texas and New Mexico have surpassed a combined 350 cases, and two unvaccinated people have died from measles-related causes. Measles is caused by a highly contagious virus that's airborne and spreads easily when an infected person breathes,

Measles cases in West Texas are still rising two months after the outbreak began. As measles cases in West Texas are still on the rise two months after the outbreak began, local public health officials say they expect the virus to keep spreading for at least several more months and that the official case number is likely an undercount.

The Texas measles outbreak has grown to 309 confirmed cases, not counting dozens of additional cases in neighboring states. Cases have been identified in three additional counties, according to the Texas Department of State Health Services' Friday update.