Reuters reports that a Liberian man who collapsed in the Lagos airport is being tested for ebola. Although it has not made the news on this side of the pond, ebola has killed almost 700 people in Sierra Leone, Liberia and Guinea. If the virus is truly loose in Lagos, it could be a disaster. Also, because of the numbers of oil patch hands travelling there, these men could provide a vector for infection in the US and Europe.
If you want to learn about ebola and other hemorrhagic viruses, read "The Hot Zone" by Richard Preston. I promise you, you will not sleep well after reading it.