HLA-DRB1 and infection: Secondly, we wanted to examine specific alleles highlighted in our previous studies of psychiatric disorders and autoimmune disease (namely, B*5701, C*0202, C*0304, C*0401, C*0702, DPB1*0301, DPB1*0402, DPB1*1501, DQA1*0102, DQA1*0301, DQA1*0401, DQA1*0501, DQB1*0201, DQB1*0302, DQB1*0402, DQB1*0501, DQB1*0602, DRB1*0301, DRB1*0401, DRB1*0405, DRB1*0801 and DRB1*1501) to see what effects they had on susceptibility to severe infections.