CD4 and Hypertension: Conversely, HZ infection, male sex, cardiovascular history, hypertension, smoking, injecting drug users (IDU), hepatitis C, and estimated glomerular filtration (eGFR) rate < 60 mL/min/m3 and CD4 count < 200 cells/μL have strongly predicted hemorrhagic stroke [8, 22, 24, 25].