The measles outbreak in West Texas is linked with cases in New Mexico, officials said Tuesday, as well as new cases reported in Oklahoma. This brings the total number of cases to 258 across three states.

" West Texas measles cases rise to 259. Here is what you need to know. " was first published by The Texas Tribune, a nonprofit, nonpartisan media organization that informs Texans — and engages with them — about public policy, politics, government and statewide issues.

At least 95% of community members need to be vaccinated to protect against the virus. That number is a lot lower in some western states.