A child in West Texas has died from measles, the first U.S. fatality from the virus since 2015. The outbreak, centred in the Mennonite community, has spread rapidly, with 124 cases in Texas and nine in New Mexico. Low vaccination rates are driving infections, raising concerns among public health officials. Measles, one of the most contagious diseases, can cause severe complications, including pneumonia and brain swelling. Experts urge vaccinations as the best defence against the virus, which is resurging nationwide.