Viral encephalitis associated with COVID-and following COVID-19 vaccination a review of the literature and three cases

Abstract

Severe acute respiratory syndrome-related coronavirus (SARS-CoV-2) infects the human upper respiratory, causing coronavirus disease 2019 (COVID-19) with symptoms of acute respiratory distress syndrome (ARDS). However, in susceptible populations, such as immune-compromised individuals and the elderly, the symptoms develop into more severe diseases (e.g., pneumonia). Data reported in neurological studies have also confirmed that SARS-CoV-2 has neuroinvasive capacities, as it could be spread from the respiratory tract to the nervous system (NS), causing encephalitis. Compared to neuroinvasive human coronaviruses, SARS-CoV-2 may damage the nervous system, causing neurological diseases. Opportunistic human SARS-CoV-2 pathogens could be connected with the activating or the exacerbation of several neurological complaints whose etiology leftovers ailing unstated. In this review, details about human coronaviruses that have been linked to the possibility of developing a disease of the nervous system were illustrated. Three cases of COVID-19 patients who had viral encephalitis were discussed in this review: one patient presented with encephalopathy; the other patient with acute hemorrhagic necrotizing encephalopathy. And third patient presented with viral encephalitis succeeding COVID-19 vaccination. .