The rare type of Ebola, known as Bundibugyo virus, spread undetected for weeks following the first known death while authorities tested for another virus. | World News

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

The type of Ebola virus behind the latest outbreak, known as Bundibugyo, is rare

And how public health workers are trying to contain it