Texas is driving the highest numbers. An outbreak in West Texas that started nearly three months ago has reached 597 cases.

Health experts fear the virus will take hold in other U.S. communities with low vaccination rates and that the spread could stretch on for a year.

The U.S. has 800 measles cases as of Friday, and outbreaks in several states. Texas is up to nearly 600 of those cases. Two children and an adult have died from measles-related illnesses. Indiana, ...

The U.S. has 800 cases of measles nationwide as of Friday, and two more states identified outbreaks this week. Texas is ...

Current public health guidelines only recommend an early third MMR dose for infants traveling internationally.