Can border walls keep out pandemics? The World Health Organization is officially branding the Ebola outbreak in eastern DR Congo a "public health emergency of international concern". As the death toll from the rare strain climbs, so does the number of contact cases. Ituri province may seem remote on a map, but nowhere's very far in a globalised world.
Watch moreEbola in DR Congo: 'This could be a very bad outbreak,' MSF health worker says
