MOG and neuromyelitis optica: Among RAEs, some cases of CNS Inflammatory Demyelinating Events (CIDEs) following COVID-19 vaccines have been described in literature from December 2020 (9), including both acute syndromes, such as acute transverse myelitis (ATM) and Acute demyelinating encephalomyelitis (ADEM), and relapses of chronic CNS inflammatory demyelinating diseases, such as multiple sclerosis (MS), neuromyelitis optica spectrum disorder (NMOSD), and myelin oligodendrocyte glycoprotein antibody-associated disease (MOGAD).