West Nile Virus

Most people with West Nile virus have no symptoms; about 80% of infected people feel nothing. For those who do get sick, symptoms usually start 2–6 days after an infected mosquito bite and can be mild flu-like illness (fever, headache, body/joint aches, vomiting/diarrhea, or rash) or, rarely (<1%), severe illness affecting the brain/spinal cord (high fever, neck stiffness, confusion, tremors, convulsions, muscle weakness, or paralysis).

So it seems you are not too likely to ever suffer from it, and if you do, well better hope you are not one of the <1%