The individual—whose name, age, and sex were not released by local authorities—is the second person to die from the virus amid a growing outbreak along the New Mexico-Texas border, sparking widespread concern among doctors that the federal government’s response is simply not enough to halt the spread of measles.

As a measles outbreak in West Texas continues to grow, the response from US Health and Human Services Secretary Robert F. Kennedy Jr. has leaned heavily on treatment with vitamin A, as well as “good results” from the use of the steroid budesonide,

A measles outbreak in the American southwest has killed a second person, an unvaccinated adult, New Mexico health officials have said. The fatality comes roughly a week after measles took the life of an unvaccinated child in nearby Texas,