All 5,000 cases turned out to be false alarms. In fact, despite all the hype about Ebola generated by the media and government officials, as of this writing there has only been one preliminarily identified case of someone contracting Ebola within the United States.
Ebola is a dangerous disease, but it is very difficult to contract. Ebola spreads via direct contact with the virus. This usually occurs though contact with bodily fluids. While the Ebola virus may remain on dry surfaces for several hours, it can be destroyed by common disinfectants. So common-sense precautions should be able to prevent Ebola from spreading.
It is no coincidence that many of those countries suffering from mass Ebola outbreaks have also suffered from the plagues of dictatorship and war. The devastation wrought by years of war has made it impossible for these countries to develop modern healthcare infrastructure. For example, the 14-year civil war in Liberia left that country with almost no trained doctors. Those who could leave the war-torn country were quick to depart. Sadly, American foreign aid props up dictators and encourages militarism in these countries.