I listened to that doctor. While he may be former military, and may even be an infectious disease doc, most docs in the military know nothing about the Ebola virus. He sounded to me like someone talking about general features of viral disease, not specific features of Ebola disease.
Ebola cannot be shed until there are symptoms, because it causes the symptoms in order to find a new host.
Some respiratory viruses shed prior to symptoms, but Ebola is not a respiratory virus.
Do you know how Ashoka Mupko, the foreign reporter contracted the disease? Washing the car of an Ebola patient story has been already discredited. He had no contact with anyone displaying Ebola symptoms.
“Some respiratory viruses shed prior to symptoms, but Ebola is not a respiratory virus.”
IIRC the Reston strain that only infects monkeys turned out to be airborne when it was first thought that it couldn’t be transmitted that way. What’s the chance that ebola Zaire could mutate?