We examined T1D and control plasma for levels of IgG specific for adenovirus, parainfluenza 1/2/3, Epstein-Barr virus viral capsid antigen (EBV VCA), cytomegalovirus (CMV), Coxsackievirus, echovirus, herpes simplex virus 1 (HSV1), and IgA to Saccharomyces cerevisiae. Here, CD79A is linked to type 1 diabetes mellitus.