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Effect of U=U Messaging on HIV in South Africa

The Effect of Undetectable Equals Untransmittable (U=U) Messaging on HIV Testing Uptake Among South African Men: a Randomized Trial.

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04364165
Acronym
U=U
Enrollment
1048
Registered
2020-04-27
Start date
2020-03-02
Completion date
2020-08-01
Last updated
2024-02-26

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

HIV/AIDS

Keywords

Behavioral sciences, HIV testing

Brief summary

This cluster randomized trial will investigate whether messaging about being undetectable equals untransmittable (U=U) designed through a participatory, user-centered approach increases HIV testing uptake within men in Klipfontein Mitchells Plain (KMP) district in Cape Town, South Africa.

Detailed description

This study will investigate the effect of participatory, user designed messaging to increase knowledge about U=U on HIV testing uptake within men in the Klipfontein Mitchells Plain (KMP) district, a resource-limited, densely populated, high HIV disease burden area in Cape Town, through a cluster randomized trial design. The study will be conducted in two phases: Phase 1 is a participatory, human-centered design framework will be used to develop U=U messages to increase HIV testing uptake in men. Phase 2 is a cluster randomized trial that will determine the effect of U=U messaging on HIV testing uptake. The primary outcome will be HIV testing uptake at a community-based mobile clinic. Secondary outcomes will include the proportion of males tested who are HIV-positive (and newly HIV positive). Men in the intervention group will receive invitation cards for mobile HIV testing that contain U=U messages. Men in the control group will receive invitation cards for mobile HIV testing that contain standard messaging. Mobile clinic days (i.e. clusters of men receiving invitation cards on a single day) will be the unit of randomization. Recruitment will be conducted by trained mobile clinic staff at high foot-traffic sites in the KMP community. Recruitment efforts will be focus on young men in multiple mobile testing sites that are located in areas within KMP.

Interventions

BEHAVIORALStandard invitation to free HIV testing at mobile clinic

Participants receive standard invitation to same day HIV testing at mobile clinic.

BEHAVIORALU=U messaging and invitation to free HIV testing at mobile clinic

Participants receive messaging about being undetectable equals untransmittable (U=U) and invitation to same day HIV testing at mobile clinic.

Sponsors

Desmond Tutu HIV Foundation
CollaboratorOTHER
Bill and Melinda Gates Foundation
CollaboratorOTHER
University of Pennsylvania
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
SCREENING
Masking
NONE

Eligibility

Sex/Gender
MALE
Age
18 Years to No maximum
Healthy volunteers
Yes

Inclusion criteria

* Men at least 18 years of age within the vicinity of the mobile Tutu Tester HIV testing mobile clinic

Exclusion criteria

* None

Design outcomes

Primary

MeasureTime frameDescription
HIV Testing UptakeRecruitment took place over 12 days.Number of Participants that were Invited and Came for HIV Testing

Secondary

MeasureTime frameDescription
HIV PositivityRecruitment took place over 12 days.Number of Participants that Came for Testing and Obtained an HIV-Positive Result

Countries

South Africa

Participant flow

Recruitment details

Peer promoters were trained to deliver brief messages to men at selected high foot-traffic sites in the KMP community. Males ≥ 18 years of age within the vicinity of the mobile Tutu Tester HIV testing van and willing to consent to participate in the study were eligible for inclusion.

Participants by arm

ArmCount
Standard of Care Messaging
Participants randomized into this arm will receive standard invitation cards distributed at the Tutu Tester containing basic information encouraging HIV testing. Messages will encourage men to come in for HIV testing at the mobile clinic on the same day. A mobile clinic recruiter will deliver the standard invitation card and share a brief script including the standard Tutu Tester message that free HIV testing is available at the Tutu Tester, with no further information or motivation to test. Standard invitation to free HIV testing at mobile clinic: Participants receive standard invitation to same day HIV testing at mobile clinic.
68
U=U Messaging
Participants randomized into this arm will receive the U=U invitation cards distributed at the Tutu Tester that will seek to assuage the fears of testing HIV positive by conveying the message that HIV treatment makes it possible for HIV positive people to be untransmittable and to live normal lives. Messages will encourage men to come in for HIV testing at the mobile clinic on the same day. A mobile clinic recruiter will deliver the U=U invitation card and share a brief script asking people if they knew they could control HIV and that pills exist that can keep them healthy and ensure they don't transmit the virus to their sex partners, and that free HIV testing is available at the Tutu Tester. U=U messaging and invitation to free HIV testing at mobile clinic: Participants receive messaging about being undetectable equals untransmittable (U=U) and invitation to same day HIV testing at mobile clinic.
112
Total180

Baseline characteristics

CharacteristicU=U MessagingTotalStandard of Care Messaging
Age, Continuous35 years35 years34 years
Race/Ethnicity, Customized
Black or mixed race
112 Participants180 Participants68 Participants
Region of Enrollment
South Africa
112 participants180 participants68 participants
Sex: Female, Male
Female
0 Participants0 Participants0 Participants
Sex: Female, Male
Male
112 Participants180 Participants68 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 5440 / 504
other
Total, other adverse events
0 / 5440 / 504
serious
Total, serious adverse events
0 / 5440 / 504

Outcome results

Primary

HIV Testing Uptake

Number of Participants that were Invited and Came for HIV Testing

Time frame: Recruitment took place over 12 days.

Population: The unit of randomization was Mobile Clinic Days; analysis of outcome measures summarizes the individual Number of Participants, or number of men who received the intervention.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Standard of Care MessagingHIV Testing Uptake68 Participants
U=U MessagingHIV Testing Uptake112 Participants
p-value: 0.0195% CI: [1.44, 2.78]Regression, Logistic
Secondary

HIV Positivity

Number of Participants that Came for Testing and Obtained an HIV-Positive Result

Time frame: Recruitment took place over 12 days.

Population: The unit of randomization was Mobile Clinic Days; analysis of outcome measures summarizes the individual Number of Participants, or number of men who received the intervention.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Standard of Care MessagingHIV Positivity3 Participants
U=U MessagingHIV Positivity7 Participants
p-value: 0.4195% CI: [0.36, 5.78]Regression, Logistic

Source: ClinicalTrials.gov · Data processed: Feb 14, 2026