Fernández–Domínguez et al. [19] RT-PCR NA Negative anti-GD1b antibodies, negative other anti-ganglioside antibodies Increased total protein (110 mg/dL), albuminocytological dissociation Demyelinating NA Brain: no pathological findings IVIG 20 g/day (5 days) Hydroxychloroquine, lopinavir/ritonavir NA