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Moon and Sun Brothers: A Community Prevention Intervention (Hermanos de Luna y Sol)

Who can join

Ages 18 and older · All sexes · Healthy volunteers welcome

Inclusion Criteria:

* Identify as male.
* Latino/x/e
* Report having sex with men only, or both men and women in the last 12 months.
* Speaks, reads/writes in Spanish.
* ≥18 years of age.
* Has access to a computer, laptop, tablet or smart phone device.
* Be willing to participate in the study.
* Be able to provide informed consent.

Exclusion Criteria:

* Populations younger than 18 years.
* Individuals who have participated in an Hermanos de Luna y Sol program in either the intervention or control group locations.

About the study

The goal of this quasi-experimental, community intervention is to reduce HIV sexual risk among Latino immigrant bisexual men or men who have sex with men. The main questions the study aims to answer are:

Does the intervention improve sexual risk behaviors? Does the intervention increase self-esteem and social support? Are self-esteem and social support mediators in the link between the intervention and sexual risk? Researchers will compare information from the intervention versus control participants to answer the above questions.

Participants in the intervention arm will take part in:

* One day-long (8-hour) group retreat. * Weekly discussion groups. * Community events and civic engagement activities. * Prevention counseling. Participants in the control arm will not be part of any activity.

What is being tested

• Moon and Sun Brothers: A Community Prevention Intervention (behavioral)

Sponsor: San Francisco State University · Participants: 360 · Started: Jan 13, 2026

Contact the study team

• Emma V Sanchez-Vaznaugh, ScD · Phone: 415-405-2832

Official record on ClinicalTrials.gov — NCT07475702

Locations in the U.S.

Conditions

• Unsafe Sex

From ClinicalTrials.gov, data retrieved Sep 30, 2026. Each study sets its own eligibility; the study team decides who can join.