The next day, Duncan's organs were failing, and he was intubated to help him breathe. In the afternoon, the hospital began administering Brincidofovir.[36][37] Nurses Nina Pham and Amber Joy Vinson continued to care for Duncan around the clock. On October 7, the hospital reported that Duncan's condition was improving.[38] However, Duncan died at 7:51 a.m. on October 8, becoming the first person to die in the United States of Ebola virus disease and the index patient for the later infections of nurses Pham and Vinson.[39][40]