At least 124 cases of measles have been identified in Texas since late January, mostly among children and teenagers who are either unvaccinated or whose vaccination status is unknown, officials say.

An unvaccinated school-aged child has died in the measles outbreak in Texas, which has seen 124 reported cases of the disease. It's the first measles death in the U.S. since 2015. Pediatrician and infectious disease specialist Dr.