anese B virus and Dengue viruses NA Brain: no pathological findings IVIG 400 mg/kg (5 days) Lopinavir/ritonavir, hydroxychloroquine, antibiotic therapy, oxygen support (35%) Resolution of all symptoms except for minor hyporeflexia at the LL Manganotti et al. [33] RT-PCR IL-1: 0.2 pg/ml (< 0.001 pg/ml), IL-6: 113.0 pg/ml (0.8–6.4 pg/ml), IL-8: 20.0 pg/ml (6.7–16.2 pg/ml), TNF-α: 16.0 pg/ml (7.8–12.2 pg/ml) Negative anti-ganglioside antibodies, negative HIV, HBV, HCV negative serological tests for autoimmune disorders Increased total protein (52 mg/dl), leucocytes: 1 cell/mm3, negative SARS-CoV-2 PCR Demyelinating AIDP NA IVIG 400 mg/kg/day (5 days) Hydroxychloroquine, oseltamivir, darunavir, methylprednisolone and tocilizumab + mechanical invasive ventilation Improvement of motor symptoms Manganotti et al. [33] RT-PCR IL-1: 0.5 pg/ml (< 0.001 pg/ml), IL-6: 9.8 pg/ml (0.8–6.4 pg/ml), IL-8: 55.0 pg/ml (6.7–16.2 pg/ml), TNF- α: 16.0 pg/ml (7.8–12.2 pg/ml) Negative anti-ganglioside antibodies, negative HIV, HBV, HCV negative serological tests for autoimmune disorders Normal total protein (40 mg/dl), leucocytes: 1 cell/mm3, negative SARS-CoV-2 PCR Mixed demyelinating and axonal   EMG subtype unknown Brain: no patholog