The most common pathogens identified in aseptic meningitis (Enteroviruses) [1] and encephalitis (HSV, WNV and Enterovirus) [13] do not include EBV so it’s not surprising routine evaluation did not include EBV testing (EBV CSF PCR or EBV IgM, IgG) for any patient. This evidence concerns the gene CD40LG and aseptic meningitis.