Exposed is not being reproted correctly in the media
We all are exposed to dozens of pathogins a day - exposed. Means nothing different for Ebola than any other infection.
The Ebola virus infects by entering a host cell and releasing a small piece of viral RNA.A host cell is inside a human.
In any illiness the body tries to fight with antibodies.
It makes total sense that noone can be contagious unless there is a sympton( the body starting to get infected, and in order to try and protect itslef starts a fever).
How could anyone be contagious with any infection, it the virus or bacteria has not started to replicate and attack? It does not work that way wiht anything else nor Ebola.
Exposed only means that.
Symptoms usually begin about eight to 10 days after exposure to the virus. It takes time for any virus to replicate enough to start casueing symptoms.
It starts like any other infection. a headache, fever and aches and pains. That is more IMO, a result of the fever beginning. Fever from anything results in a headache, fever and aches and pains.
Diarrhea and vomiting follow. This makes sense , as it replicates, and viral loads get higher and higher, the body then tries to rid itself of it by Diarrhea and vomiting. Expel.
And finally, blood vessels deep in the body begin leaking fluid, causing blood pressure to plummet so low that the heart, kidneys, liver and other organs begin to fail. This too makes sense as it relates to the end stage being the most contagious.
SInce the virus is in the blood, and blood is leaking out of blood vessels into surrounding tissues it makes sense. It is like a paper towel put over spilled mustard.
THe liklihood of getting mustard on ones hand is more likely when handling the paper towel that has mustard all over it as oppossed to a spot of mustard on a counter.
IMO
http://www.thedailystar.net/fighting-ebola-epidemic-46290