CSF3 and viral encephalitis: Supportive care, such as transfusion of fresh frozen plasma or platelet for hematologic abnormalities, methylprednisolone for acute lung injury or ARDS, albumin replacement for hypoalbuminemia, intravenous immunoglobulin for severe infection or encephalitis, granulocyte colony stimulating factor for leukopenia, and antibiotics for bacterial superinfection, would be the most important part of the treatment process.