KINSHASA, Congo (AP) — Congo’s Ebola outbreak has spread to a sixth province, after a death was recorded in the previously unaffected Bas-Uele province, Africa CDC Director-General Jean Kaseya said Thursday.

Kaseya said the infected person had traveled from Isiro in Haut-Uele province to Buta, the capital of Bas-Uele, where the person died.

The outbreak in eastern Congo, considered the fastest-growing one yet, is on track to surpass the deadliest one in history, which erupted over a decade ago and killed over 11,000 people, the World Health Organization said. It has killed over 2,100 people out of more than 4,500 cases, according to the latest government figures.