Further info from link
After some comments by confused readers, Mr. Tolar offered clarification on the difference between spreading the virus and being contagious yourself.
I said spread, the virus, I did not say you were contagious. What I meant by this, was the summation of two concepts. The first concept is that of a fomite. We have established that the virus can survive for an unspecified amount of time outside the host, and we have established that sneezing/coughing is a perfectly logical method of transmission. So if patient A is infectious/contagious, they sneeze on patient B, but then patient B goes home and picks up their sisters 1 6 month old, who rubs his face and drools all over your shoulder, he could very well have just orally consumed large quantities of the virus, therefore becoming patient C. Patient B never got sick, the virus never entered their system, yet they are responsible for spreading the virus to someone else.
The second concept of this is defining symptom. Lets assume it means anything other than your baseline condition. That means the first signs of being contagious, are also the more mild symptoms. Flu season is upon us. The initial stages of Ebola are like the flu, and its human nature to be in denial, so many people, if infected, would hope its just the flu and wait it out. They are not showing symptoms indicative of Ebola, but they ARE symptomatic of something and therefore, by the CDC definition, would be contagious. Its also normal procedure for people to be symptomatic BEFORE seeking medical care, so technically, everyone will be contagious, BEFORE knowing they have Ebola.