Some molecules including IL-2, IL-6, IL-12, GM-CSF, IFN-γ, IP-10, S100B, IL-17A and OPN, remain persistently elevated in the blood for months after clearance of WNV from the body, which can lead to a post-infectious pro-inflammatory state that may promote autoimmune diseases, such as myasthenia gravis. This evidence concerns the gene S100B and myasthenia gravis.