The Ebola outbreak serves as a portrait of the fact that the health systems of the globe must be radically interconnected in order to ensure that global outbreaks like this have a chance of being contained. We are not in the 19th century where the massive migrations of populations took place using slow-moving transport and thus where the incubation periods of most diseases would have in all likelihood passed before a person approached a border.
Today I can be infected by a disease, and within hours be on a plane that crosses the world. Traditional public health precautions of quarantining the sick will not necessarily be effective. And so we must think though a better manner of managing what is fast becoming a continental pandemic and could easily become a global pandemic.