COVID-19: a new emerging respiratory disease from the neurological perspective
Résumé
Coronavirus disease 2019 (COVID-19) has become a challenging public health catastrophe worldwide. The newly emerged
disease spread in almost all countries and infected 100 million persons worldwide. The infection is not limited to the respiratory
system but involves various body systems and may lead to multiple organ failure. Tissue degenerative changes result from direct
viral invasion, indirect consequences, or through an uncontrolled immune response. Severe acute respiratory syndrome
coronavirus 2 (SARS-CoV-2) spreads to the brain via hematogenous and neural routes accompanied with dysfunction of the
blood–brain barrier. The involvement of the central nervous system is now suspected to be among the main causes of death. The
present review discusses the historical background of coronaviruses, their role in previous and ongoing pandemics, the way they
escape the immune system, why they are able to spread despite all undertaken measures, in addition to the neurological
manifestations, long-term consequences of the disease, and various routes of viral introduction to the CNS.