Infection of the central nervous system by Epstein-Barr virus: clinical manifestations and prognosis

Introduction. The role of Epstein-Barr virus (EBV) in central nervous system (CNS) infections is not fully resolved. We wanted to describe the clinical manifestations of patients with EBV infection in cerebrospinal fluid. Patients and methods. We reviewed the clinical records of all adult patients EBV PCR-positive in cerebrospinal fluid, without lymphoproliferative disease, during 2004 to 2020. Results. We identified 27 patients, 22 (81.5%) were men, and median age was 54 years. Twenty-three (82.1%) patients were immunosuppressed, 16 HIV-positive. In 15 (55.6%) patients coinfection with another microorganism was diagnosed and in 12 (44.4%) patients it was detected as the only pathogen. Of the 12 patients, three (25%) was immunocompetent patients, one had Guillain Barre syndrome (GBS), another had disseminated multiphasic encephalitis, and another had lymphocytic meningitis; 9 (75%) immunosuppressed, 7 HIV-positive, 4 had encephalitis that resolved without sequelae and 4 had encephalopathy, two HIH-positive had moderate cognitive impairment as a sequela. Conclusions. In our study, EBV produced encephalitis, meningitis, polyradiculomyelitis and GBS, mainly in immunosuppressed patients. In more than half of the cases, it is associated with other pathogens where the role of EBV is unclear. In immunocompetent patient, the infection can be serious and leave sequelae and in HIV-positive patients with encephalopatic involvement without encephalitis, the neurological damage could be greater, so we consider it of interest to carry out studies to evaluate the prognosis as well as the role of antivirals in the evolucion of these clinical pictures.