The Mennonite population being affected by a measles outbreak in West Texas is part of a larger, loosely affiliated group of churches worldwide.

The measles outbreak was originally concentrated in a rural Mennonite community in Gaines County, where many children are not vaccinated. Who are the Mennonites?

At least 124 cases have been reported since late January, mostly among children and teenagers who were unvaccinated or whose vaccination status was unknown.