Maybe by a lot. Consider just one quarantined slum, West Point in Monrovia. It has a population variously described as 50,000 to 75,000 and already ebola has already broken out there. Not an easy job trying to trace the contacts in an angry and scared population. Next two to three weeks will show if the tide has been stemmed, but the outlook isn't good. .
There was another story on how you could bribe your way out of the West Point slum. $$$$ to be made if you want to run the risk.