At least 49 cases have been confirmed. Health officials — who are scrambling to get a handle on the vaccine-preventable outbreak — suspect 200 to 300 people may be infected.

The measles outbreak in the South Plains region, in West Texas, has expanded to at least 48 people, most of them children.

A rapidly growing measles outbreak in Gaines County, Texas, linked to low vaccination rates, has reached 48 cases, prompting urgent health warnings and vaccination efforts.