Out of the 1510 cases registered in North Kivu and Ituri provinces of the country, as many as 400 have recovered, reported CNN.
It will be the first time the vaccine is used in a country not in the midst of an active Ebola outbreak.
The World Health Organization said the 10th Ebola outbreak in DRC does not currently constitute a public health emergency of international concern.
Four soldiers were among the dead following the attack on Saturday night, military official Mak Hazukai said, with witnesses describing gunfire and groups of assailants slashing victims with machetes.
WFP is providing food to patients and caregivers in hospitals located in the towns of Mangina and Beni.