Two cases of Ebola have been confirmed in the Democratic Republic of the Congo (DRC), according to a government health official.
At least ten more cases are suspected, confirmed the head of the national institute for biological research, Jean Jack Muyembe.
It is the ninth time Ebola has been recorded in the DRC.
Ebola virus disease, formerly known as Ebola haemorrhagic fever, is a severe, often fatal illness in humans.
The virus is transmitted to people from wild animals and spreads in the human population through human-to-human transmission.
The World Health Organisation reports that the first Ebola outbreaks occurred in remote villages in Central Africa, near tropical rainforests.
The two-year outbreak in West Africa that began in 2014 involved major urban areas as well as rural ones. More than 11,300 people died and some 28,600 were infected, most of them in Guinea, Sierra Leone and Liberia
Sporadic cases of Ebola have occurred since the epidemic was brought under control, with a small number of patients being confirmed in 2017.
The disease was first detected in 1976 in two simultaneous outbreaks, one in what is now Nzara, South Sudan, and the other in Yambuku in the DRC. The latter occurred near the River Ebola, after which it is named.