Ebrahimzadeh et al. [15] RT-PCR + chest CT Normal CRP (5 mg/L), normal serum protein immunoelectrophoresis Negative anti-GQ1b antibodies, negative screening for Campylobacter jejuni, HIV, EBV, CMV, influenza virus (type A and B), HCV, non-reactive VDRL Increased total protein (78 mg/dL), normal cell count (erythrocyte = 0/mm3, leukocyte = 4/mm3), normal glucose (70 mg/dL) Demyelinating