"Key to our response is training community health workers to recognize the symptoms of the virus and refer potential cases for immediate medical care", he added.
"Patient adherence is paramount", Prusak said. Each patient was spirited away with the help of family members during the night last Monday. "One of the men died at home and his body was brought back to the hospital for safe burial with the help of the MSF teams; the other was brought back to the hospital yesterday morning and he died during the night", Gray said in a statement.
Health ministry sources told the Reuters news agency that two police officers were assigned to help track the two patients down.
World Health Organization is accelerating its efforts with nine countries neighbouring Congo to try to prevent the current Ebola outbreak from spreading beyond the border, WHO's director for Africa said Wednesday.
Yakouide denied it, saying no cases had been confirmed in the capital and warning against spreading false reports which "could create panic and undermine the effectiveness of the response to the Ebola outbreak".
Congo's health ministry on Wednesday announced six new suspected cases in the rural Iboko health zone in the country's northwest and two in Wangata. Overall the death toll stands at 27.
"We're on the epidemiological knife edge of this response", he added at the United Nations body's annual assembly.
"The next few weeks will really tell if this outbreak is going to expand to urban areas or if are going to be able to keep it under controls", WHO's emergency response chief Peter Salama told ministers and diplomats in Geneva.
The incident happened in the latest Ebola breeding ground in the city of Mbandaka in the Democratic Republic of Congo, according to officials with Doctors Without Borders. Complicating factors include its spread to a major city, the fact that health workers have been infected and the existence of three or four "separate epicenters" that make finding and monitoring contacts of infected people more hard.
"We prayed for her", he said, shortly before she died.
"It's really the detective work of epidemiology that will make or break the response to this outbreak", Mr Salama said. "It is documenting how people are getting infected and, therefore, managing control, the control of transmission".
Ebola responders in the Democratic Republic of Congo (DRC) are revealing more about local practices and community mistrust, which in some instances are hampering the actions needed to curb the spread of the disease in the country's outbreak hot spots.
The WHO official confirmed that a selective, or "ring vaccination" programme had just begun and that efforts were ongoing to ensure that the Ebola drug could be stored in "ultracold" conditions at between -60 and -80°C. The other countries are Angola, Burundi, Rwanda, South Sudan, Tanzania, Zambia and, to a lesser extent, Uganda.
It would be impractical and counter-productive to ask security guards, who are not equipped with protective gear, to forcibly restrain patients, said Nahid Bhadelia, medical director of the special pathogens unit at Boston University Medical Center, who worked in an Ebola treatment unit in Sierra Leone during its 2014-2016 outbreak.
There is no specific treatment for Ebola.
The disease, which is transmitted through direct contact with blood or bodily fluids belonging to infected people or animals, is widely feared for its destructive internal and external bleeding due to the virus causing severe damage to blood vessels.
The cases represent a setback to costly efforts to contain the virus, including the use of experimental vaccines, and shows efforts to stem its spread can be hampered by age-old customs or scepticism about the threat it poses.