The Africa Centres for Disease Control and Prevention is warning that the Ebola outbreak in the Democratic Republic of Congo remains uncontrolled, despite signs of declining transmission in some areas.

Africa CDC Director-General Jean Kaseya said Thursday that officials have seen a plateau and a slight decrease in cases but cautioned that “no one can come and say the outbreak is under control.” The comments followed World Health Organization officials highlighting improvements in parts of the country while warning that transmission continues to expand elsewhere.

As of Sept. 15, the DRC had recorded 7,404 confirmed Ebola cases and 3,577 deaths, according to the latest figures cited by the WHO. The outbreak has spread across 62 health zones in seven provinces.

The situation has become particularly concerning in North Kivu, where weekly cases have nearly doubled over the past two weeks, rising from about 100 to more than 200. Meanwhile, transmission has declined in Ituri, the original epicenter, and South Kivu has reported no new cases since May.

The outbreak involves the Bundibugyo strain of Ebola, which is distinct from the Zaire strain responsible for several previous outbreaks. Africa CDC has maintained a continental public health emergency designation and continues coordinating with the DRC, Uganda, the WHO and other partners on surveillance, treatment, contact tracing and infection-control efforts.

Uganda, which was also affected by the outbreak, completed a 42-day period without a new confirmed case in August and declared its outbreak over. The DRC continues to face active transmission, particularly in areas where insecurity, difficult transportation, and limited health resources complicate the response.