In multivariate regression, HL risk was elevated among veterans with recent CD4 200-350 cells/μL (IRR=1.67, 95%CI=1.16-2.40) and <200 cells/μL (IRR=1.61, 95%CI=1.09-2.39), compared to >350 cells/μL. Here, CD4 is linked to Hodgkins lymphoma.