The Texas measles outbreak intensified to 309 cases with 40 hospitalizations. HOUSTON — A measles outbreak in Texas has intensified, with the Texas Department of State Health Services now confirming 309 cases statewide since late January — up from 279 cases reported earlier this week.

But there's a silver lining, officials say: More people have received a measles, mumps and rubella vaccination this year in Texas and New Mexico, which also has an outbreak, compared to last year — even if it's not as high as they would like. And pharmacies across the U.S., especially in Texas, are seeing more demand for MMR shots.

The Texas measles outbreak has expanded to 309 cases, affecting four new counties, with most cases in children 17 and younger.