According to the head of medical charity Doctors Without Borders (MSF) mission in the city, two out of three Ebola patients who escaped quarantine in the Democratic Republic of the Congo's Mbandaka have died.
The third patient was found alive and is currently under observation by MSF and the World Health Organization (WHO), the MSF's Henri Gray said on Wednesday.
Meanwhile, the WHO said on Wednesday it was speeding up efforts with nine countries neighbouring the Democratic Republic of Congo(DRC) to attempt to prevent the spread of the current Ebola outbreak beyond its borders. The UN agency said teams are being deployed to assess how prepared the countries are.
WHO regional director for Africa, Matshidiso Moeti, said "The highest priority countries at risk are the Central African Republic and the Republic of the Congo, Congo Brazzaville, due to their proximity to the current event."
Moeti said the two countries are high risk due to their shared border with region at the epicentre of the current outbreak.
Both Brazzaville and Bangui have porous borders with the Ebola-affected areas, she said.
"At the second level of priority are Angola, Burundi, Rwanda, South Sudan, Tanzania and Zambia, which are also neighbouring countries to the DRC but not directly linked to the epicentre of the epidemic," Moeti added.
