Does the body do a 100% job of clearing the virus, or does some remain in the body for ever as happens with some other virus infections?
This site should help answer some of your questions:
http://www.webmd.com/news/20140404/faq-ebola-virus
And here:
http://www.webmd.com/a-to-z-guides/ebola-fever-virus-infection
Once he becomes asymptomatic, the clock starts on his body clearing the virus. Ive seen anywhere from 7 weeks to 60 days before all his secretions are clear of the virus. Then another clock starts. Ive seen either 21d or 42d before the area can be declared ebola free.
So well know by Thanksgiving or Christmas if Emory has dropped the ball or not.