How Do I Know Someone has Ebola?

The symptoms generally take 2 - 21 days to become apparent.
The symptoms are deceptively general - tending to look a lot like malaria or a flu.
One more thing, people aren't contagious until they display symptoms.

Fever

Headache

Diarrhoea

Vomiting

Weakness

Joint & Muscle Ache

Stomach Pain

Lack of Appetite