The World Health Organization just declared an Ebola virus outbreak in the Congo an international emergency. The virus is spreading to larger cities and more than 1,600 people have died in the area, which is already considered a war zone. The idea is to get the rest of the world to pay attention and help provide aid, but in these circumstances governments often also close borders as a precautionary measure.
There have only been five of these emergencies declared throughout history, and these outbreaks have to be an international threat in order to be declared.
Doctors Without Borders, UNICEF and the International Rescue Committee are all working to help fight this. If you would like to help, donations to any of them would be a great way to do so. You can also share this via social networking to help raise funds and awareness.