The World Health Organization (WHO) says there are 906 suspected cases of Ebola in the Democratic Republic of Congo (DRC), including 223 suspected deaths that are being investigated.An outbreak of the virus's rare Bundibugyo strain in the country's east is threatening to overwhelm health authorities, with cases also reported in Uganda.There have been 125 confirmed cases of Ebola in the DRC, including 17 confirmed deaths in Ituri, North Kivu and South Kivu, since the outbreak likely began about two months ago.There have also been nine confirmed cases of Ebola in Uganda, at least three of which were imported from the DRC, and one death However, no community transmission has been reported, the WHO said.There are no approved vaccines or therapies specifically for the Bundibugyo strain of Ebola, according to the WHO, which has declared the outbreak a public health emergency of international concern.It has alarmed experts because of how long it went undetected while spreading across a densely populated area, making it difficult to trace and isolate the contacts of infected individuals.The rate of people who have died among those confirmed to have the infection ranges from 30 per cent to 50 per cent, according to Anais Legand from the High Threat Pathogens Team, which is part of the WHO's Health Emergencies Programme."It's huge