HIV-Positive: Definition, Diagnosis, Treatment, and Living Well

What HIV-Positive Means

Antibodies to human immunodeficiency virus (HIV) detected in blood/saliva. Indicates infection with HIV-1 (global) or HIV-2 (West Africa).

Natural History Without Treatment

• Acute seroconversion syndrome (2–4 wks): fever, rash, lymphadenopathy, high viremia
• Clinical latency (years): progressive CD4+ T-cell decline
• AIDS (CD4 <200 or OI): opportunistic infections, malignancies

Diagnosis

• 4th-gen Ag/Ab combo assay (detects p24 antigen + antibodies) — window period ~18–45 days
• Confirmatory: HIV-1/HIV-2 differentiation immunoassay
• Viral load (RNA PCR) and CD4 count at diagnosis

Treatment: Antiretroviral Therapy (ART)

• Goal: Viral suppression (<50 copies/mL) → immune recovery, zero transmission risk (U=U)
• Regimens: 2 NRTIs + INSTI (bictegravir, dolutegravir) — preferred; single-tablet regimens
• Initiation: Same-day/rapid start per guidelines
• Monitoring: VL q3–6mo, CD4 q3–6mo (less frequent if stable)

Living with HIV Today

• Life expectancy near-normal with early ART
• U=U: Undetectable = Untransmittable (sexual transmission)
• PrEP for partners (if not suppressed)
• Comprehensive care: cardiovascular, renal, bone, mental health, cancer screening
• Stigma remains major barrier; legal protections exist (ADA, ACA)