Early Initiation of Antiretroviral Therapy Associated With Reduced Risk of Viral Blips in HIV Patients

Strategic Insights -

A new study has found that early initiation of antiretroviral therapy (ART) is associated with a reduced risk of viral blips in HIV patients. The research analyzed data from the US Military HIV Natural History Study, which included over 1,400 participants who were on stable suppressive ART from 1996 to 2022. The study found that among participants who initiated ART within 2 years of HIV acquisition, there was a significantly lower hazard of blips compared to those who initiated ART after more than 2 years.

Key Takeaways:

  • Early initiation of ART within 2 years of HIV acquisition was associated with a 71% lower hazard of blips (HR: 0.29, 95% CI: 0.18-0.48) compared to those who initiated ART after 6-12 months.
  • Participants who initiated ART within 24 months of estimated HIV acquisition had an 86% lower hazard of blips (HR: 0.14, 95% CI: 0.08-0.23) compared to those who initiated ART after more than 24 months.
  • The overall incidence of viral blips was 1.2 per 100 person-years, with 88 participants experiencing at least one blip, including 68 with only a single blip.
  • The research suggests that reservoir plasticity may extend beyond the acute phase of HIV, and that early initiation of ART may result in a smaller reservoir size.

Statistics:

  • 1413 participants were included in the study, with an estimated human immunodeficiency virus (HIV) seroconversion date, viral suppression 400 copies/mL within 1 year after starting ART, and at least 3 HIV RNA measurements after suppression.
  • The overall incidence of viral blips was 1.2 per 100 person-years (95% CI: 0.9-1.4).
  • 88 participants experienced at least one blip, including 68 with only a single blip.
  • The hazard ratios (HRs) and 95% confidence intervals (CIs) for factors potentially associated with the time from viral suppression to first blip were as follows:

+ ART initiation within 0-6 months: HR: 0.29, 95% CI: 0.18-0.48

+ ART initiation within 6-12 months: HR: 0.43, 95% CI: 0.31-0.59

+ ART initiation within 12-24 months: HR: 0.46, 95% CI: 0.35-0.60

Sources:

  • Antiretroviral Therapy Within 2 Years of HIV Acquisition Is Associated With Fewer Viral Blips: A Retrospective Analysis of More Than 20 Years of Data From the US Military HIV Natural History Study. Clinical Infectious Diseases, 2025;81(3):499-509.
  • AIDS Weekly. October 20, 2025; p 61.