# HIV as the Cause of AIDS

HIV is a well-supported causal antecedent of HIV-associated AIDS; infection does not guarantee progression, and other illnesses can cause similar immune deficiency.

Overall Θ follows registered SC3. The convergent clinical causal case is strong and predictively consistent: documented acquisition precedes immune deterioration, suppression changes clinical trajectories, interrupted suppression worsens them, and prophylaxis prevents acquisition. Host and coinfection modifiers make infection insufficient for inevitable disease. Non-HIV ICL shows that low CD4/OI phenotypes are not HIV-specific; its existence does not erase the viral causal process established by intervention, but it blocks a broader claim that HIV is necessary for all acquired immunodeficiency.

Independent early-treatment benefits extend from adult cohorts with different baseline CD4 levels and regions to infected infants. Viral suppression and interruption are different directional tests. Universal timing, universal symptom specificity, all mortality causation and inevitable progression are not claimed.