Symptoms appear 3-15 days after being bitten by an infected mosquito.2 Incubation Period: 3-14 days.10 Asymptomatic in 80% of people.10 Around 20% of people will develop West Nile Fever.10 • Symptoms include: Nausea, fever, headache, lethargy, body soreness, swollen lymph nodes and rashes10 3-15% of those infected will have a more serious infection.2 • Elderly people and those with weak immune systems are particularly at risk.2 • About 1/150 WNV infected people may develop encephalitis or meningitis.10 • Replication of the virus within the brain causes the brain tissue to become inflamed and the nervous system to malfunction.2 • Symptoms of severe West Nile Disease (West Nile encephalitis or West Nile Meningitis) include: High
