It's the latest outbreak of a disease that had been virtually eliminated in the U.S., and it comes as vaccination rates are declining — jeopardizing the country's herd immunity from widespread outbreaks.

A small county in West Texas has 15 measles cases, mostly in school-aged children. Gaines County, which borders New Mexico, has one of the highest rates of vaccine exemptions in the state.

A measles outbreak is growing in a Texas county with dangerously low vaccination rates. In late January, two school-age children from Gaines County were hospitalized with measles. Since an estimated 1 in 5 people with the disease end up in the hospital, the two cases suggested a larger outbreak.

A measles outbreak is growing in a rural area of West Texas where vaccination rates are well below the recommended level.

According to the Texas Administrative Code (TAC) Rule §97.7, schools and childcare settings shall exclude unimmunized children for at least 21 days after the last date the unimmunized child was exposed to a measles case.

After two measles cases were identified in Houston; an outbreak has been reported in West Texas. Doctors say it's a concerning trend.

Health officials in Texas are battling a growing measles outbreak in an area that has some of the state's lowest vaccination rates and highest non-medical exemptions. On January 30, officials reported two measles cases in unvaccinated,