Hello, Welcome to HCM, This is a arboviral disease which is transmitted by Culex mosquito, most of the times in human beings it subclinical (cause no symptoms). In the cases where symptoms occur it may be fever, headaches, fatigue, muscle pain or aches, malaise, nausea, anorexia, vomiting, myalgia and rash. Similar any other viral infection it will also have the symptoms. Diagnosis of West Nile Virus infections is done by serologic testing, virus-specific antibody IgM and neutralizing antibodies. You need to confirm your diagnosis by undergoing lab investigations. Thank you.