What is recovery rate from west nile virus causing encephalitis?

Variable: A case of West Nile virus with encephalitis recover but takes long time , prolonged recuperation and need rehabilitation for a long time . They may have some memory loss or weakness of limbs

Recovery?: Patients may survive the encephalitis but have residual problems. "Almost all mortality is confined to patients with neuroinvasive disease, in whom the death rate is approximately 9%. In patients with WNV encephalitis, the overall mortality is approximately 12–15%, although it could be as high as 35% in elderly patients." REF: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3773989/