Pfefferkorn et al. [42] RT-PCR + chest CT NA Negative anti-gangliosides antibodies At admission: Normal total protein, cell count: 9/µL, negative SARS-CoV-2 PCR At day 13th: increased total protein (10.231 mg/L), normal cell count Demyelinating AIDP Spinal: massive symmetrical contrast enhancement of the spinal nerve roots at all levels of the spine including the cauda equina. Anterior and posterior nerve roots were equally affected IVIG 30 g (5 days) + mechanical invasive ventilation + plasma exchange NA At day 31 from admission: motor improvement with regression of facial and hypoglossal paresis but still needed mechanical ventilation