Questions and answers on the scale of the outbreak and the science of the Ebola virus.
This Ebola outbreak began in Guinea, near the border with Sierra Leone and Liberia, where a network of roads makes the movement of people, goods ideas possible. Unfortunately though, those same roads make spread of diseases easier. In the past African Ebola cases in isolated villages could be contained but increased transportation has accelerated the diffusion process. If this spreads to Lagos, watch out.