The case is in Tchomia, on Lake Albert, which straddles the DRC-Uganda border.
As the number of Ebola cases and deaths held steady in the Democratic Republic of the Congo (DRC) over the last 2 days, the number of people vaccinated passed the 10,000 mark.
The outbreak increased by 2 infections and now stands at 142 cases (111 confirmed).
Tests have confirmed Ebola in three more people, all from the hot spot in Beni, the Democratic Republic of the Congo's (DRC's) health ministry said today.
"The coming few days will be critical in determining the trajectory of the outbreak," the WHO says.
In Butembo, a test on a sperm sample found the virus in a man who fled to the city after he got sick in Ituri province.
The case is in a village in Masereka health zone not far from the large city of Butembo.
According to an outbreak update from the Democratic Republic of the Congo (DRC), officials recorded three more confirmed cases of Ebola yesterday, including one in a patient who died in Butembo, a major city in North Kivu province.
An Ebola-infected patient died in Butembo, a city of nearly 1 million people.
Officials confirmed 5 cases in recent days, bringing the outbreak total to 121.