Congo health workers receive Ebola vaccine as WHO warns outbreak remains out of control

How Ebola spreads

The Ervebo vaccine, which has been deployed in previous Ebola outbreaks, is being administered to health personnel as part of efforts to contain the spread of the disease. Health authorities are prioritizing medical staff because their continued ability to treat patients is critical to limiting mortality and preventing wider transmission.

According to the World Health Organization, the outbreak remains out of control. The agency has not indicated that the situation has stabilized, and health workers on the ground continue to face significant risk as they treat infected patients. International health partners are coordinating with Congolese authorities to expand the response.

The Ervebo vaccine and its history

Previous Ebola outbreaks in the Democratic Republic of Congo and in Guinea have prompted large-scale vaccination campaigns and the establishment of treatment protocols that have since become standard practice. Ervebo was first used widely during the 2018 outbreak in the DRC and has since been administered to tens of thousands of people, including health workers and contacts of confirmed cases.

The Democratic Republic of Congo has experienced more Ebola outbreaks than any other country, with at least a dozen recorded since the virus was first identified in 1976 near the Ebola River. Each outbreak has tested the capacity of the country's health system and drawn on international support to contain the disease.

Broader response measures

Health workers receiving the vaccine are also being trained in infection prevention and control measures, including the use of personal protective equipment and safe burial practices. These measures are considered essential alongside vaccination, since the vaccine does not replace the need for barrier nursing and isolation of suspected cases.

The World Health Organization has not announced a timeline for when the outbreak might be contained. Public health officials typically declare an Ebola outbreak over after 42 days have passed without a new confirmed case, a benchmark that requires sustained surveillance and rapid response to any suspected infections.

What comes next

Regional health authorities in Congo are also working to raise awareness in affected communities about the symptoms of Ebola and the importance of seeking early treatment. Community engagement has been identified in previous outbreaks as a critical factor in controlling the spread of the virus, alongside vaccination and clinical care.