Natural history of HIV-1 infection.
Level 5 - mechanism / opinion, no new human data
Narrative review synthesizing existing observational data without systematic review methodology.
PubMed 11144640 · doi:10.1016/s0891-5520(05)70135-5
What was done
This narrative review synthesized the natural history of untreated human immunodeficiency virus type 1 (HIV-1) infection, focusing on acute infection, staging based on CD4+ T-lymphocyte counts, and virologic and immunologic determinants of disease progression.
What was found
The median time from initial untreated infection to the development of AIDS ranges from 8 to 10 years. Disease staging is categorized by CD4+ T-lymphocyte counts: early disease (>500 cells/mL), mid-stage disease (200 to 500 cells/mL), and end-stage disease (<50 cells/mL). Viral load quantitation determines the rate of disease progression, while CD4+ count reflects the degree of immunodeficiency and opportunistic infection risk.
Why it matters
It outlines the classic staging and expected timeline of untreated HIV-1 disease progression, highlighting the complementary roles of viral load and CD4+ counts in clinical monitoring.
Limits
As a narrative review, it lacks a systematic search strategy, explicit study selection criteria, or meta-analytic data. The findings reflect untreated natural history and do not reflect outcomes under combination antiretroviral therapy.
Cited by
- supports HIV specifically infects CD4 T cells and depletes them, leading to opportunistic infections, Kaposi's sarcoma, and dementia.