About three days after being exposed to the virus, the symptoms of the fly usually develop suddenly. Symptoms are similar to those caused by cold viruses, but they tend to be more severe and to last longer:
* Fever (temperature of 37-40 Degrees Celsius or higher)
* Aching in muscles and joins all over the body
* Headache
* General feeling of being very ill
* Dry cough
* Blocked or runny nose
* Lack of appetite
* Extreme tiredness
* Chills and sweating