- Patients with a known history of human immunodeficiency virus (HIV) seropositivity: must have undetectable viral load using standard HIV assays in clinical practice; must have cluster of differentiation (CD)4 count >= 400/mcL; must not require prophylaxis for any opportunistic infections (i.e., fungal, mycobacterium avium complex [mAC], or pneumocystis pneumonia [PCP] prophylaxis); must not be newly diagnosed within 12 months prior to re-registration