An unvaccinated New Mexico adult who tested positive for measles has died, the second death in a growing outbreak centered along the Texas-New Mexico border, officials said Thursday. The individual did not seek medical care before death,

An unvaccinated New Mexico man tested positive for measles after death, becoming what health officials say could be the second death reported in the ongoing outbreak that has infected over 160 people in at least nine states.

A measles outbreak in the American southwest has killed a second person, an unvaccinated adult, New Mexico health officials said on Thursday. The fatality comes roughly a week after measles took the life of an unvaccinated child in nearby Texas, the first US death from the disease since 2015.