Approximately 80 percent of individuals who get infected with West Nile virus will not show any symptoms of the disease.
Up to 20 percent of infected individuals will develop brief (3 to 6 days), mild symptoms that may include: Fever
Lack of appetite
Rash on the chest, stomach and back
Approximately only one in 150 of the people who contract the virus will develop a severe an illness that requires prompts medical attention such as:High fever