A measles outbreak in Texas has spilled into New Mexico, where an unvaccinated teenager in Lea County was confirmed with the viral illness, state health officials reported Tuesday.

Measles cases are rising in the U.S. with infections confirmed in at least five states this year, and primarily spreading among unvaccinated people.

Lea County is located on the border of New Mexico and Texas. New Mexico health officials warned of a potential measles threat due to two cases of measles in Gaines County, Texas. The measles case was ...

Some of the cases appear to be connected to private religious schools in the district, said Holbrooks, who cautioned that the investigation is ongoing.

Measles — also called rubeola — is highly contagious and can be serious and even fatal for small children. While death rates have been falling worldwide as more children receive the measles vaccine, ...

As childhood vaccination rates drop in the U.S., outbreaks of measles are rising. In his new book, Booster Shots, Dr. Adam ...