<unk>  encephalitis is diagnosed by commercially available tests detecting JE virus-specific IgM antibodies in serum and/or cerebrospinal fluid, for example by IgM capture ELISA. JE virus IgM antibodies are usually detectable 3 to 8 days after onset of illness and persist for 30 to 90 days, but longer persistence has been documented. Therefore, positive IgM antibodies occasionally may reflect a past infection or vaccination. Serum collected within 10 days of illness onset may not have detectable IgM, and the test should be repeated on a convalescent sample. For patients with JE virus IgM antibodies, confirmatory neutralizing antibody testing should be performed. Confirmatory testing in the US is available only at the CDC and a few specialized reference laboratories. In fatal<unk> s, nucleic acid amplification and virus culture of autopsy tissues can be useful. Viral antigen can be shown in tissues by indirect fluorescent antibody staining.
medical cause of Japanese encephalitis
symptom of Japanese encephalitis
symptom of Eastern equine encephalitis
symptom of West Nile fever
symptom of Rabies
symptom of Tuberculous meningitis
symptoms of Rabies
symptom of Neuroleptic malignant syndrome