Texas authorities on Wednesday announced the first measles death in the state's outbreak of the highly contagious disease. The death, of a school-age child, is the first measles death in the U.S. since 2015,

The Mennonite population being affected by a measles outbreak in West Texas is part of a larger, loosely affiliated group of churches worldwide with varied beliefs and leadership structures — and with sometimes strained or distant relations with public authorities.