CD79A and multiple sclerosis: In terms of viral/microbiological serological assays, EBV-EBNA-1 IgG and InfluenzaA IgG were higher in the patient groups than in controls; InfluenzaA IgA levels were lower in relapsing compared to remitting multiple sclerosis patients; and Schistosoma IgG were lower in relapsing compared to both remitting-multiple sclerosis patients and controls (Table 2B).