Marguerita Lightfoot, PhD

Professor & Chief

Prevention Science

Marguerita Lightfoot, PhD is Professor of Medicine at the UCSF School of Medicine, Chief for the Division of Prevention Science, and Director of the Center for Prevention Studies (CAPS) and UCSF Prevention Research Center (PRC). She has an established research career conducting community-involved research, receiving awards for my community partnership efforts. She has considerable experience designing and implementing preventive interventions and has developed culturally competent, efficacious HIV interventions for delinquent adolescents, runaway/homeless youth, youth living with HIV, and young MSM, including developing interventions for delivery via technology (e.g., computers, websites, mobile phone, video games). In particular, she developed an efficacious computer-based intervention to reduce the sexual risk behaviors of delinquent youth (published in the American Journal of Public Health), successfully adapted an intervention for youth living with HIV to youth in Uganda (published in Prevention Science), and developed a computer-based intervention implemented in medical settings to reduce the HIV transmission risk behavior of adults living with HIV (published in JAIDS). She is particularly interested in developing cost-effective interventions that are easily translatable with utility in community settings and utilizes new technologies to engage disenfranchised individuals in health promotion activities. She has also conducted psychotherapy with predominately African American and Latino adolescents, adults, and families infected and/or affected by HIV.

2017 - Diversity, Equity, and Inclusion Champion Training, University of California
  1. Findings from a probability-based survey of U.S. households about prevention measures based on race, ethnicity, and age in response to SARS-CoV-2.
  2. A Community-Engaged Approach to Creating a Mobile HIV Prevention App for Black Women: Focus Group Study to Determine Preferences via Prototype Demos.
  3. Disparities in the PrEP continuum for trans women compared to MSM in San Francisco, California: results from population-based cross-sectional behavioural surveillance studies.
  4. Comparing National Probability and Community-Based Samples of Sexual Minority Adults: Implications and Recommendations for Sampling and Measurement.
  5. Psychological Distress, Felt Stigma, and HIV Prevention in a National Probability Sample of Sexual Minority Men.
  6. The Architecture of an Internal, Scientific, Presubmission Review Program Designed to Increase the Impact and Success of Grant Proposals and Manuscripts.
  7. Adaptation of an effective school-based sexual health promotion program for youth in Colombia.
  8. Risk Factors for Substance Use Among Youth Experiencing Homelessness.
  9. HIV testing and pre-exposure prophylaxis (PrEP) use, familiarity, and attitudes among gay and bisexual men in the United States: A national probability sample of three birth cohorts.
  10. Using a Social Network Strategy to Distribute HIV Self-Test Kits to African American and Latino MSM.
  11. Strategies to Increase HIV Testing Among MSM: A Synthesis of the Literature.
  12. Interventions to reduce risk for sexually transmitted infections in adolescents: A meta-analysis of trials, 2008-2016.
  13. "Like finding a unicorn": Healthcare preferences among lesbian, gay, and bisexual people in the United States.
  14. Effectiveness of School-Based Teen Pregnancy Prevention Programs in the USA: a Systematic Review and Meta-Analysis.
  15. Reducing undiagnosed HIV infection among adolescents in sub-Saharan Africa: Provider-initiated and opt-out testing are not enough.
  16. The Use of Mobile Health Applications Among Youth and Young Adults Living with HIV: Focus Group Findings.
  17. Contextual influence of Taiwanese adolescents' sexual attitudes and behavioral intent.
  18. "I Created Something New with Something that Had Died": Photo-Narratives of Positive Transformation Among Women with HIV.
  19. Compliance to Cell Phone-Based EMA Among Latino Youth in Outpatient Treatment.
  20. Sexually transmitted infection related stigma and shame among African American male youth: implications for testing practices, partner notification, and treatment.
  21. The online space presents a unique opportunity for psychological sciences to improve the health of youth.
  22. Adolescents in wartime US military families: a developmental perspective on challenges and resources.
  23. Macro-level approaches to HIV prevention among ethnic minority youth: state of the science, opportunities, and challenges.
  24. Text-messaging-enhanced HIV intervention for African American adolescents: a feasibility study.
  25. HIV prevention for adolescents: where do we go from here?
  26. The intersection of youth, technology, and new media with sexual health: moving the research agenda forward.
  27. The mediating roles of stress and maladaptive behaviors on self-harm and suicide attempts among runaway and homeless youth.
  28. Vocational training with HIV prevention for Ugandan youth.
  29. Hopelessness and sexual risk behavior among adolescent African American males in a low-income urban community.
  30. Finding shelter: two-year housing trajectories among homeless youth.
  31. A family intervention to reduce sexual risk behavior, substance use, and delinquency among newly homeless youth.
  32. Psychiatric risk factors for HIV disease progression: the role of inconsistent patterns of antiretroviral therapy utilization.
  33. Development and pretesting multimedia HIV-prevention text messages for mobile cell phone delivery.
  34. Protective factors associated with fewer multiple problem behaviors among homeless/runaway youth.
  35. Efficacy of brief interventions in clinical care settings for persons living with HIV.
  36. HIV prevention and African American youth: examination of individual-level behaviour is not the only answer.
  38. Individual and environmental protective factors for risky sexual behavior among homeless youth: an exploration of gender differences.
  39. Effects of behavioral intervention on substance use among people living with HIV: the Healthy Living Project randomized controlled study.
  40. Affect regulation, stimulant use, and viral load among HIV-positive persons on anti-retroviral therapy.
  41. Efficacy of a culturally adapted intervention for youth living with HIV in Uganda.
  42. It's not just what you say: relationships of HIV dislosure and risk reduction among MSM in the post-HAART era.
  43. Self-monitoring of behaviour as a risk reduction strategy for persons living with HIV.
  44. An HIV-preventive intervention for youth living with HIV.
  45. Depressive symptomatology among HIV-positive women in the era of HAART: a stress and coping model.
  46. Who benefited from an efficacious intervention for youth living with HIV: a moderator analysis.
  47. Computerized HIV preventive intervention for adolescents: indications of efficacy.
  48. Predicting HIV transmission risk among HIV-infected men who have sex with men: findings from the healthy living project.
  49. Psychological distress, substance use, and adjustment among parents living with HIV.
  50. Health and health care among male-to-female transgender persons who are HIV positive.
  51. Insurance coverage, usual source of care, and receipt of clinically indicated care for comorbid conditions among adults living with human immunodeficiency virus.
  52. Prevention for HIV-seropositive persons: successive approximation toward a new identity.
  53. Risk behaviors of youth living with HIV: pre- and post-HAART.
  54. Predictors of substance use frequency and reductions in seriousness of use among persons living with HIV.
  55. Perceived adverse effects of antiretroviral therapy.
  56. The Healthy Living Project: an individually tailored, multidimensional intervention for HIV-infected persons.
  57. The influence of partner type and risk status on the sexual behavior of young men who have sex with men living with HIV/AIDS.
  58. Prevention for substance-using HIV-positive young people: telephone and in-person delivery.
  59. HIV transmission risk behavior among men and women living with HIV in 4 cities in the United States.
  60. Intricacies and inter-relationships between HIV disclosure and HAART: a qualitative study.
  61. Predictors of child custody plans for children whose parents are living with AIDS in New York City.
  62. Theory-guided, empirically supported avenues for intervention on HIV medication nonadherence: findings from the Healthy Living Project.
  63. Four-year behavioral outcomes of an intervention for parents living with HIV and their adolescent children.
  64. Efficacy of a preventive intervention for youths living with HIV.
  65. Negotiating behavior change with HIV-positive adolescent girls.