What is the case fatality rate range for people affected by West Nile virus?

The case fatality rate for individuals infected with West Nile virus typically falls within the range of 2-5%. This percentage represents the proportion of severe cases that result in death and highlights the relative severity of the illness. Most people infected with West Nile virus experience mild symptoms or are asymptomatic; however, a small percentage develops more severe illness, especially among older adults and those with weakened immune systems. The fatality rate indicates significant concern for public health, emphasizing the importance of prevention and monitoring in affected areas. This range helps inform health professionals and the public about the potential risks associated with the virus and supports targeted interventions to reduce its impact.