Acute HIV infections during new long-acting prevention options

ACTION: Study of ACuTe Infections On Novel HIV Prevention Modalities

NIH-funded research University of California, San Francisco · NIH-11093469

This project looks at when and why people get early (acute) HIV infections while using new long-acting prevention methods like the dapivirine vaginal ring and injectable cabotegravir.

Quick facts

Grant typeR01 grant
Study typeNIH-funded research
Funding institutionUniversity of California, San Francisco NIH-funded
Lab location1 site (San Francisco, United States)
Project IDNIH-11093469 on NIH RePORTER

What this research studies

You would be part of work that follows people using long-acting HIV prevention to catch infections early and find out why they happened. Participants undergo regular HIV testing, measurements of drug levels, and resistance testing if infection is found. The team combines clinic data, lab results, and modeling to estimate how often acute infections occur and how resistance could affect future HIV treatment. Results are intended to help clinicians and patients choose and use prevention options more safely.

Who could benefit from this research

Good fit: Ideal candidates are people at substantial risk for HIV who are using or considering long-acting PrEP such as the dapivirine ring or injectable cabotegravir, or who have had recent possible exposures.

Not a fit: People already living with well-controlled HIV on antiretroviral therapy or those not at risk for HIV exposure are unlikely to get direct benefit from participation.

Why it matters

Potential benefit: If successful, the project could reduce missed early infections, guide safer use of long-acting prevention, and limit spread of drug-resistant HIV.

How similar studies have performed: Previous trials showed that dapivirine and injectable cabotegravir can prevent HIV but also recorded some early infections and cases of drug resistance, so this work builds on those findings.

Where this research is happening

San Francisco, United States

Researchers

About this research

  1. This is an active NIH-funded research project — typically early-stage science, not a clinical trial accepting patient enrollment.
  2. Some NIH-funded labs run parallel clinical studies or seek volunteers for related work. To check, contact the principal investigator or institution listed above.
  3. For full project details, budget, and progress reports, visit the official NIH RePORTER page below.
Conditions Acquired Immune Deficiency Syndrome VirusAcquired Immunodeficiency Syndrome Virus
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.