Assessing the International Spreading Risk Associated with the 2014 West African Ebola Outbreak.

The 2014 West African Ebola Outbreak is so far the largest and deadliest recorded in history. The affected countries, Sierra Leone, Guinea, Liberia, and Nigeria, have been struggling to contain and to mitigate the outbreak. The ongoing rise in confirmed and suspected cases, 2615 as of 20 August 2014, is considered to increase the risk of international dissemination, especially because the epidemic is now affecting cities with major commercial airports. This study assesses that risk of spread and the results show that probability of international spread outside the African region is small, but not negligible