NCT06971367

IBIS Megastudy of Interventions to Encourage HIV Retesting

Transformative Approaches to Rapidly and Efficiently Test Demand Creation Interventions to Promote HIV Retesting in Adults at Increased Risk of HIV

• Status: Recruiting
• Phase: N/A
• Study type: Interventional
• Enrollment: 40,000 (estimated)
• Sponsor: University of California, San Francisco · Academic / Other
• Sex: All
• Age: 15 Years
• Healthy volunteers: Accepted

Summary

In this study, the investigators will test the effectiveness of multiple low-cost behavioral interventions, designed with end-user input, to promote HIV retesting among adults in rural Kenya and Uganda who have higher risk of HIV exposure.

Detailed description

HIV re-testing is crucial in ensuring early identification of disease to promote well-being of an individual as well as preventing onward spread of infection. The IBIS megastudy of interventions to encourage HIV retesting aims to test up to 12 different strategies aimed at encouraging repeat testing of HIV among individuals \>/= 15 years old who are at increased risk of HIV infection. The different strategies are aimed at modifying individual behavior to enhance HIV testing. The study aims to enroll 30,000-40,000 individuals from 8 HIV testing sites in South West Uganda and Western Kenya. The study will then evaluate the effectiveness of the interventions by comparing HIV retesting rates 3-6 months later in the different study arms. The data collected during the study will further be used to understand which of the interventions offered worked best and for whom.

Conditions

• HIV

Interventions

Type	Name	Description
BEHAVIORAL	Risk assessment messaging	Participants will be shown a brief video message at their baseline visit, containing information related to HIV risk assessment core concepts and encouraging them to return for a repeat HIV test. They will also receive brief SMS follow-up messages at about 8 and 11 weeks after baseline reminding them about HIV retesting and re-emphasizing concepts from the HIV risk assessment content category.
BEHAVIORAL	U=U messaging	Participants will be shown a brief video message at their baseline visit, containing information related to U=U core concepts and encouraging them to return for a repeat HIV test. They will also receive brief SMS follow-up messages at about 8 and 11 weeks after baseline reminding them about HIV retesting and re-emphasizing concepts from the U=U content category.
BEHAVIORAL	Community benefits messaging	Participants will be shown a brief video message at their baseline visit, containing information related to Community Benefits core concepts and encouraging them to return for a repeat HIV test. They will also receive brief SMS follow-up messages at about 8 and 11 weeks after baseline reminding them about HIV retesting and re-emphasizing concepts from the Community Benefits content category.
BEHAVIORAL	Fresh start effect	Participants will be shown a brief video message at their baseline visit, containing information related to Fresh Start core concepts and encouraging them to return for a repeat HIV test. They will also receive brief SMS follow-up messages at about 8 and 11 weeks after baseline reminding them about HIV retesting and re-emphasizing concepts from the Fresh start effect content category.
BEHAVIORAL	Education-based messaging	Participants will be shown a brief video message at their baseline visit, containing information related to HIV education core concepts and encouraging them to return for a repeat HIV test. They will also receive brief SMS follow-up messages at about 8 and 11 weeks after baseline reminding them about HIV retesting and re-emphasizing concepts from the Education-based content category.
BEHAVIORAL	Default appointment messaging	Participants will be shown a brief video message at their baseline visit, containing information related to Default Appointment core concepts and encouraging them to return for a repeat HIV test. They will also receive brief SMS follow-up messages at about 8 and 11 weeks after baseline reminding them about HIV retesting and re-emphasizing concepts from the Default Appointment content category.
BEHAVIORAL	Reserved for you messaging	Participants will be shown a brief video message at their baseline visit, containing information related to the "Reserved for you" core concepts and encouraging them to return for a repeat HIV test. They will also receive brief SMS follow-up messages at about 8 and 11 weeks after baseline reminding them about HIV retesting and re-emphasizing concepts from the "Reserved for you" content category.
BEHAVIORAL	Social norms (default) messaging	Participants will be shown a brief video message at their baseline visit, containing information related to Social Norms core concepts and encouraging them to return for a repeat HIV test. The video message will be delivered by the default avatar. They will also receive brief SMS follow-up messages at about 8 and 11 weeks after baseline reminding them about HIV retesting and re-emphasizing concepts from the Social Norms content category.
BEHAVIORAL	Social norms (varied) messaging	Participants will be shown a brief video message at their baseline visit, containing information related to Social Norms core concepts and encouraging them to return for a repeat HIV test. The video message will be delivered by an avatar that approximately matches each participant's age and sex. They will also receive brief SMS follow-up messages at about 8 and 11 weeks after baseline reminding them about HIV retesting and re-emphasizing concepts from the Social Norms content category.
BEHAVIORAL	Goal-setting messaging	Participants will be shown a brief video message at their baseline visit, containing information related to goal-setting core concepts and encouraging them to return for a repeat HIV test. They will also receive brief SMS follow-up messages at about 8 and 11 weeks after baseline reminding them about HIV retesting and re-emphasizing concepts from the goal-setting content category.
BEHAVIORAL	Incentive	Participants will be informed that they will receive a small financial incentive if they return for repeat HIV testing in 3-6 months after enrollment.

Timeline

• Start date: 2025-12-09
• Primary completion: 2027-12-01
• Completion: 2027-12-01
• First posted: 2025-05-14
• Last updated: 2026-01-26

Locations

2 sites across 2 countries: Kenya, Uganda