[moose07]

May have found what you are looking for:

"With some infections, you can shed and spread the virus long before you get ill. That's not the case with Ebola. It's only after you are sick and feverish do you become contagious. However, it only takes a miniscule amount to infect and kill. A microscopic droplet of blood or saliva on your bare hand could enter through a break in your skin. And, whether you realize it or not, we all have breaks in our skin."

Source

[ansel12]

For her neighbors, in Guinea and across its border, another critical number is 42 -- as in 42 days, or two incubation periods. If the health care teams here don't see any new cases during that time then they officially say the outbreak is over.

Interesting.

[No One Special]

Thank you. Exactly what I was looking for and the source looks reputable.

[21twelve]

Don’t forget sweat (one MORE reason to wipe off the GYM equipment before you get on, or the doorknob touched in the last 3 days by someone with a sweaty Ebola fever).

And liquid droplets from a cough or sneeze can travel about three feet and land on things that can later be touched. Or onto you if you are withing three feet of the event when it happens.