Ebola outbreak in DRC reaches over 1,000 cases with risk of spread to South Sudan

The Ebola outbreak declared on May 15 in the Democratic Republic of the Congo has recorded more than 1,000 confirmed cases and nearly 300 deaths. The epicentre is Ituri province near the borders with South Sudan and Uganda. Modelling published in The Lancet Infectious Diseases found an almost 70 percent chance of a case reaching South Sudan within 12 weeks.

The country has limited border surveillance, contact tracing and safe burial capacity.

Current spread and detection challenges The outbreak is caused by the Bundibugyo species of Ebola virus. Symptoms are less recognisably haemorrhagic than the Zaire strain and can be mistaken for other illnesses, delaying identification. There is no licensed vaccine for the Bundibugyo strain and no cure. Real case numbers are thought to be higher due to delays in testing and surveillance.

Regional preparations and health system strain Neighbouring countries are preparing for possible cases and laying groundwork for early intervention. Officials in the affected region have expanded testing and treatment capacity, though it remains insufficient to match the pace of transmission.

Healthcare worker infections have reduced staff numbers and weakened trust in health facilities. Most infections occurred while treating patients before Ebola was confirmed. The gap between detection and response has been a main constraint, compounded by a fragile health system and conflict-related displacement.