The Bundibugyo strain of Ebola, which spreads through direct contact with bodily fluids from infected people or animals, has an average fatality rate of around 40%, according to the WHO.

The WHO says the outbreak, caused by the Bundibugyo virus, does not meet the criteria for a pandemic emergency, but countries sharing borders with the DRC are at high risk

More than 300 suspected cases and 88 suspected deaths have so far been reported, primarily in Congo but also in neighboring Uganda.