...plus the -hm- incubation period?

That is - for how long you can transmit the disease without showing symptoms.

The nightmare, of course, being a highly contagious, very deadly disease which let its victims infect others for weeks or months before falling ill themselves.

I recall having read somewhere that a 'good' thing about ebola is that it mostly gets its victims before they've had a chance to travel very far, thus limiting its spread.