Demonstration of cerebrospinal fluid lymphocytes sensitized against virus antigens in mumps meningitis

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Abstract
Virus‐induced proliferation of cerebrospinal fluid (CSF) lymphocytes and blood lymphocytes was studied in patients with mump meningitis and in patients with aseptic meningitis of other etiology. In four out of five patients with mump meningitis the proliferation of CSF lymphocytes after mumps virus stimulation was higher than obtained with the corresponding number of blood lymphocytes. No proliferation was registered when lymphocytes from patients with other aseptic meningitis were stimulated with mumps virus. These data indicate the occurrence in CSF of lymphocytes specifically sensitized against mumps virus in patients with mumps meningitis.