Alongside the slew of new cases, 12 more people died from their infections, as violence continued against outbreak responders.
The outbreak has reached 936 cases and 591 deaths.
Tedros said there are signs the virus is retreating, but added that security is still the main challenge for health workers.
The DRC and Republic of Congo had seroprevalance rates of 2% to 3.5%.
Officials report 2 new cases, as well as 3 incidents of violent encounters slowing vaccination efforts in Katwa, Butembo, and Kalunguta.
Officials report 5 new infections, expanding the outbreak to 923 cases.
A 20th health zone in the Democratic Republic of the Congo (DRC) has confirmed its first Ebola case, according to today's update from the ministry of health. A young woman who was a case-contact of patient in Butembo, refused follow-up, and died is the first case-patient recorded in Lubero.
Patients must be treated as patients, not as biothreats, MSF head says.
There are now officially 907 cases of Ebola in the DRC.
With 8 new infections (and 6 more deaths), the outbreak has grown to 897 cases.
