The Democratic Republic of Congo (DRC) has reported 515 confirmed Ebola cases and 91 deaths, marking a sharp escalation in an outbreak that has prompted the World Health Organization (WHO) to declare a global health emergency.

The latest figures, released by Congolese authorities on 7 June, show the outbreak continues to spread despite intensified containment efforts by national and international health agencies.

The outbreak is being driven by the Bundibugyo strain of Ebola, a rare variant for which there is currently no approved vaccine or specific treatment, raising concerns among health officials about the difficulty of controlling transmission.

The WHO declared the outbreak a Public Health Emergency of International Concern (PHEIC) in May after infections spread beyond eastern Congo into neighbouring Uganda, increasing the risk of regional transmission.

Cases rising at an alarming pace