As of Sunday, 1,506 people had died in the outbreak of Ebola in the Democratic Republic of Congo, AFP news agency quotes the health ministry as saying.
There have been 2,239 recorded cases, it said.
This is the second biggest ever outbreak, after the epidemic that started in 2014 in West Africa and killed 11,300 people.
But the World Health Organization (WHO) said this month that the outbreak currently did not yet represent a global threat.
Ebola infects humans through close contact with infected animals, including chimpanzees, fruit bats and forest antelope.
It can then spread rapidly, through contact with even small amounts of bodily fluid of those infected – or indirectly through contact with contaminated environments.