BUNIA, DEMOCRATIC REPUBLIC OF THE CONGO / RankWire.AI / – The World Health Organization has reported that 80% of recent Ebola cases in eastern Congo stem from unidentified transmission routes. Many affected individuals were not listed on contact tracing lists prior to testing confirming their infection. This gap hampers early isolation efforts and delays treatment for symptomatic patients. Response teams often identify new clusters only after patients arrive at clinics or die within their communities. The ongoing outbreak involves the less common Bundibugyo virus strain.
As of July 13, Congo reported a total of 2,011 confirmed cases and 754 fatalities. The province of Ituri remains the epicenter, with 1,808 cases and 631 deaths. North Kivu has documented 182 cases and 106 deaths. Additionally, South Kivu, Haut-Uele, and Tshopo have recorded infections. Authorities have placed 753 patients in isolation and noted 366 recoveries. Approximately 67% of identified contacts in the most affected regions are under active monitoring by response teams.
Contact tracing is vital for identifying individuals exposed to the virus before they can further propagate it. Typically, contacts are observed for 21 days following the last known exposure. WHO reported that 92.3% of 430 deaths investigated through July 5 occurred outside healthcare facilities or before hospital admission, reducing the chances for prompt testing and isolation. Ebola transmits through direct contact with infected blood or bodily fluids, and contaminated objects can also serve as transmission vectors.
Confirmed cases span five provinces
The outbreak has affected 45 health zones across five provinces in Congo. Ituri has reported cases in 26 zones, while North Kivu has 11. Haut-Uele has 14 cases with 13 deaths, Tshopo has four cases and three deaths, and South Kivu has three cases and one death. The extensive geographic distribution is placing additional strain on laboratories, treatment facilities, and mobile surveillance teams.
In Uganda, 20 cases and two deaths had been confirmed by July 14. Seventeen patients had recovered by that date, with the most recent confirmed case reported on June 21. Of these, 15 infections were linked to travel from Congo, while five were associated with local transmission events. Ugandan health authorities have not documented community-wide spread, but they continue to monitor travelers and aid workers who left affected areas during the outbreak.
Enhanced testing and treatment efforts underway
Bundibugyo virus currently has no licensed vaccine or approved specific treatment. Medical teams focus on supportive care, including fluids, oxygen, electrolyte replacement, and other measures. WHO added the first molecular diagnostic test for this virus to its Emergency Use Listing on July 2. There are now ten laboratories supporting testing in the affected region, with a combined capacity to perform over 2,000 tests daily. Researchers have also initiated a clinical trial involving remdesivir and the antibody treatment MBP134.
The government of Congo, WHO, and Africa CDC continue their efforts in surveillance, testing, treatment, safe burials, and community outreach. Challenges such as insecurity, displacement, frequent movement in mining areas, and strikes among health workers complicate response efforts. WHO has received approximately 40% of its $115 million funding appeal. Authorities emphasize the importance of rapid case detection, as most new infections occur outside the scope of known transmission chains.