With 8 new infections, outbreak totals have now climbed to 3,348 cases and 2,210 deaths.
One of the chains involves a patient who has a 2nd Ebola illness, the WHO says.
The Democratic Republic of the Congo's (DRC's) Ebola technical committee said there are three new cases of Ebola today, raising the outbreak total to 3,343, and 432 suspected cases are under investigation.
The technical committee, the CMRE, said the death toll now stands at 2,210. Today's cases come from Mabalako and Biena, which had gone 85 days without a new case.
Two weeks ago a top WHO official predicted just such a surge; cases have now reached 3,340.
In other developments, humanitarian group World Vision releases reports on interviews with people, including many children, from hardest-hit areas.
Response activities are still "paralyzed" in Beni, Mangina, and Biakato over violence.
After 2 new attacks, Doctors Without Borders pulls its staff from Biakato.
The emergency stockpile is part of efforts to streamline response to the next outbreak.
Public Health England (PHE) today confirmed that a person in the southwest of England has been diagnosed as having monkeypox, likely contracted after a recent visit to Nigeria.
The United Kingdom documented its first cases of the rare virus last year, in two patients who also likely contracted the disease in Nigeria, plus a case involving a healthcare worker—the first instance of spread of the disease in the country.
In recent days officials have confirmed 10 Ebola deaths in the community, which elevate the risk of disease spread.
