Sponsor or institution

Clinical trials and research at Oswaldo Cruz Foundation

• 6Clinical trials
• 1Country

Newest trials

All recruiting trials (6)

• Online cohort of sexual and gender minorities testing digital support to boost PrEP and ART use

  In Brazil, sexually and gender diverse adults are being followed online to see if weekly WhatsApp reminders help people stick to PrEP or ART.

  Recruiting Oswaldo Cruz Foundation · Rio de Janeiro, Rio de Janeiro · NCT07772791

• Improve access to PrEP for underserved communities in Rio de Janeiro

  The project will try offering daily oral PrEP plus on-site and digital support to HIV-negative people at higher risk in underserved areas of Rio de Janeiro to see if more people start and stay on PrEP.

  Recruiting at 2 sites Oswaldo Cruz Foundation · Nova Iguaçu, Rio de Janeiro and 1 other locations · NCT07584122

• Doxycycline to prevent bacterial STIs in sexual and gender minorities in Rio de Janeiro.

  This research will try taking doxycycline after sex to see if it lowers the chance of syphilis, gonorrhea, and chlamydia for men who have sex with men, transgender women, and travestis in Rio de Janeiro who are living with HIV or using PrEP.

  Recruiting Oswaldo Cruz Foundation · Rio de Janeiro, Rio de Janeiro · NCT07500415

• Twice-yearly lenacapavir injections to prevent HIV in young people in Brazil

  This will test whether lenacapavir injections given under the skin every six months prevent HIV in people at higher risk in Brazil compared with daily TDF/FTC pills.

  Recruiting at 8 sites Oswaldo Cruz Foundation · Manaus, Amazonas and 7 other locations · NCT07497594

• Decentralized treatment for hepatitis C in Brazil

  This study is testing a new way to treat hepatitis C in Brazil using a medication called Epclusa to see if it helps more people get the care they need compared to traditional methods.

  Recruiting at 2 sites Phase 4 Oswaldo Cruz Foundation · Rio de Janeiro, Rio de Janeiro and 1 other locations · NCT06306300

• Evaluating the Yellow Fever Vaccine in People with HIV

  This study is testing how well the Yellow Fever vaccine works and how safe it is for people with HIV compared to those without HIV.

  Recruiting Phase 4 Oswaldo Cruz Foundation · Rio de Janeiro · NCT03132311

Quick answers

How many clinical trials run by Oswaldo Cruz Foundation are recruiting right now?

6, as of November 12, 2026. We update this list each time we refresh our data from ClinicalTrials.gov.

Where are these trials running?

All of them have sites in Brazil. Each study page lists its sites and which ones are recruiting.

What phases are they in?

Phase 4: 2. Trials with no phase listed are usually device, behavioural or observational studies.

How do I join one?

Open a study, check the "Is this trial a fit for you?" section, then contact the study team listed on the page. They will ask a few screening questions. Asking is free and does not commit you to anything. Talk it over with your doctor first.

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