Photo of Ingrid T. Katz,  MD, MHS

Ingrid T. Katz, MD, MHS

Brigham And Women's Hospital

Brigham And Women's Hospital
Phone: (617) 525-8194

Ingrid T. Katz, MD, MHS

Brigham And Women's Hospital


  • Associate Professor, Medicine, Harvard Medical School
  • Associate Physician, Medicine, Brigham And Women's Hospital


Research Abstract

I am an Associate Professor at Harvard Medical School, with a primary appointment in the Department of Medicine at Brigham and Women’s Hospital, and a secondary appointment through Massachusetts General Hospital Center for Global Health. As a physician-scientist, board-licensed in Internal Medicine and Infectious Diseases, I have focused my research over the past decade on the social determinants of health-seeking behavior among people living in low-resource settings (in the U.S. and sub-Saharan Africa), with the goal of developing sustainable socio-behavioral interventions aimed at improving care for the most underserved. My research expertise is in mixed-methods research. In the area of HPV research, we have developed a conceptual model of vaccine adherence, that has been consistently used for guiding HPV vaccine scale-up. We have also performed multiple qualitative studies related to understanding barriers to HPV vaccine uptake. Our research and editorials have been published in multiple journals including: The New England Journal of Medicine, Annals of Internal Medicine, Lancet HIV, AIDS, JAIDS, and AIDS and Behavior. It has also been featured in UNAIDS publications, and throughout the lay press including Scientific American, Reuters, and the British Broadcasting Corporation (BBC).

The proposed collaborative project reflects overarching goals in my research program: 1) to identify effective, scalable, and sustainable interventions to improve the uptake of the HPV vaccine, and 2) to develop effective strategies for engaging vulnerable populations. My role as on this project is informed by my training as a physician caring for individuals in underserved communities, and my ongoing research focused on community-based strategies to improve engagement in care. Specifically, I will apply my content expertise in HPV, and my experience with mixed-methods research, to understand barriers to care for young people and their families, and improve the uptake of the HPV vaccine in this population.

Publications from Harvard Catalyst Profiles

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  • Ramanadhan S, Fontanet C, Teixeira M, Mahtani S, Katz I. Exploring attitudes of adolescents and caregivers towards community-based delivery of the HPV vaccine: a qualitative study. BMC Public Health 2020; 20:1531. PubMed
  • Markt SC, Tang T, Cronin AM, Katz IT, Howitt BE, Horowitz NS, Lee LJ, Wright AA. Insurance status and cancer treatment mediate the association between race/ethnicity and cervical cancer survival. PLoS ONE 2018; 13:e0193047. PubMed
  • Katz IT, Maughan-Brown B. Improved life expectancy of people living with HIV: who is left behind? Lancet HIV 2017; 4:e324-e326. PubMed
  • Johnson KL, Lin MY, Cabral H, Kazis LE, Katz IT. Variation in Human Papillomavirus Vaccine Uptake and Acceptability Between Female and Male Adolescents and Their Caregivers. J Community Health 2017; 42:522-532. PubMed
  • Katz IT, Wright AA. Scientific Drought, Golden Eggs, and Global Leadership - Why Trump's NIH Funding Cuts Would Be a Disaster. N Engl J Med 2017. PubMed
  • Bor J, Ahmed S, Fox MP, Rosen S, Meyer-Rath G, Katz IT, Tanser F, Pillay D, Bärnighausen T. Effect of eliminating CD4-count thresholds on HIV treatment initiation in South Africa: An empirical modeling study. PLoS ONE 2017; 12:e0178249. PubMed
  • Katz IT, Butler LM, Crankshaw TL, Wright AA, Bramhill K, Leone DA, Giddy J, Mould S. Cervical Abnormalities in South African Women Living With HIV With High Screening and Referral Rates. J Glob Oncol 2016; 2:375-380. PubMed
  • Zanoni BC, Archary M, Buchan S, Katz IT, Haberer JE. Systematic review and meta-analysis of the adolescent HIV continuum of care in South Africa: the Cresting Wave. BMJ Glob Health 2016; 1:e000004. PubMed
  • Earnshaw VA, Bogart LM, Klompas M, Katz IT. Medical mistrust in the context of Ebola: Implications for intended care-seeking and quarantine policy support in the United States. J Health Psychol 2016. PubMed
  • Katz IT, Bangsberg DR. Cascade of Refusal-What Does It Mean for the Future of Treatment as Prevention in Sub-Saharan Africa? Curr HIV/AIDS Rep 2016; 13:125-30. PubMed
  • Magidson JF, Dietrich J, Otwombe KN, Sikkema KJ, Katz IT, Gray GE. Psychosocial correlates of alcohol and other substance use among low-income adolescents in peri-urban Johannesburg, South Africa: A focus on gender differences. J Health Psychol 2016. PubMed
  • Siedner MJ, Bassett IV, Katz IT, Ng CK, Bangsberg DR, Tsai AC. Reply to Okatch et al. Clin Infect Dis 2016; 62:670-1. PubMed
  • Katz IT, Bogart LM, Fu CM, Liu Y, Cox JE, Samuels RC, Chase T, Schubert P, Schuster MA. Barriers to HPV immunization among blacks and latinos: a qualitative analysis of caregivers, adolescents, and providers. BMC Public Health 2016; 16:874. PubMed
  • Katz IT, Siedner MJ. Does early ART in sub-Saharan Africa decrease mortality? Lancet HIV 2015; 2:e354-5. PubMed
  • Katz IT, Shapiro DE, Tuomala R. Factors Associated With Lack of Viral Suppression at Delivery. Ann Intern Med 2015; 162:874-5. PubMed
  • Katz IT, Tsai AC. Psychological therapy to improve HIV care and reduce stigma. Lancet HIV 2015; 2:e172-3. PubMed
  • Siedner MJ, Ng CK, Bassett IV, Katz IT, Bangsberg DR, Tsai AC. Trends in CD4 count at presentation to care and treatment initiation in sub-Saharan Africa, 2002-2013: a meta-analysis. Clin Infect Dis 2015; 60:1120-7. PubMed
  • Katz IT, Leister E, Kacanek D, Hughes MD, Bardeguez A, Livingston E, Stek A, Shapiro DE, Tuomala R. Factors associated with lack of viral suppression at delivery among highly active antiretroviral therapy-naive women with HIV: a cohort study. Ann Intern Med 2015; 162:90-9. PubMed
  • Katz IT, Bogart LM, Cloete C, Crankshaw TL, Giddy J, Govender T, Gaynes MR, Leone D, Losina E, Bassett IV. Understanding HIV-infected patients' experiences with PEPFAR-associated transitions at a Centre of Excellence in KwaZulu Natal, South Africa: a qualitative study. AIDS Care 2015; 27:1298-303. PubMed
  • Katz IT, Dietrich J, Tshabalala G, Essien T, Rough K, Wright AA, Bangsberg DR, Gray GE, Ware NC. Understanding Treatment Refusal Among Adults Presenting for HIV-Testing in Soweto, South Africa: A Qualitative Study. AIDS Behav 2014. PubMed
  • Rough K, Dietrich J, Essien T, Grelotti DJ, Bansberg DR, Gray G, Katz IT. Whoonga and the abuse and diversion of antiretrovirals in Soweto, South Africa. AIDS Behav 2014; 18:1378-80. PubMed
  • Tsai AC, Bangsberg DR, Kegeles SM, Katz IT, Haberer JE, Muzoora C, Kumbakumba E, Hunt PW, Martin JN, Weiser SD. Internalized stigma, social distance, and disclosure of HIV seropositivity in rural Uganda. Ann Behav Med 2013; 46:285-94. PubMed
  • Katz IT, Ryu AE, Onuegbu AG, Psaros C, Weiser SD, Bangsberg DR, Tsai AC. Impact of HIV-related stigma on treatment adherence: systematic review and meta-synthesis. J Int AIDS Soc 2013; 16:18640. PubMed
  • Wright AA, Howitt BE, Myers AP, Dahlberg SE, Palescandolo E, Van Hummelen P, MacConaill LE, Shoni M, Wagle N, Jones RT, Quick CM, Laury A, Katz IT, Hahn WC, Matulonis UA, Hirsch MS. Oncogenic mutations in cervical cancer: genomic differences between adenocarcinomas and squamous cell carcinomas of the cervix. Cancer 2013; 119:3776-83. PubMed
  • Katz IT, Bassett IV, Wright AA. PEPFAR in transition--implications for HIV care in South Africa. N Engl J Med 2013; 369:1385-7. PubMed
  • Wright AA, Stieglitz H, Kupersztoch YM, Paulk ME, Kim Y, Katz IT, Munoz F, Jimenez RB, Mutchler J, Rivera L, Back AL, Prigerson HG. United states acculturation and cancer patients' end-of-life care. PLoS ONE 2013; 8:e58663. PubMed
  • Katz IT, Ybarra ML, Wyatt MA, Kiwanuka JP, Bangsberg DR, Ware NC. Socio-cultural and economic antecedents of adolescent sexual decision-making and HIV-risk in rural Uganda. AIDS Care 2013; 25:258-64. PubMed
  • Katz IT, Nkala B, Dietrich J, Wallace M, Bekker LG, Pollenz K, Bogart LM, Wright AA, Tsai AC, Bangsberg DR, Gray GE. A qualitative analysis of factors influencing HPV vaccine uptake in Soweto, South Africa among adolescents and their caregivers. PLoS ONE 2013; 8:e72094. PubMed
  • Katz IT, Essien T, Marinda ET, Gray GE, Bangsberg DR, Martinson NA, De Bruyn G. Antiretroviral therapy refusal among newly diagnosed HIV-infected adults. AIDS 2011; 25:2177-81. PubMed
  • Katz IT, Ware NC, Gray G, Haberer JE, Mellins CA, Bangsberg DR. Scaling up human papillomavirus vaccination: a conceptual framework of vaccine adherence. Sex Health 2010; 7:279-86. PubMed
  • Katz IT, Shapiro R, Li D, Govindarajulu U, Thompson B, Watts DH, Hughes MD, Tuomala R. Risk factors for detectable HIV-1 RNA at delivery among women receiving highly active antiretroviral therapy in the women and infants transmission study. J Acquir Immune Defic Syndr 2010; 54:27-34. PubMed
  • Katz IT, Wright AA. Circumcision--a surgical strategy for HIV prevention in Africa. N Engl J Med 2008; 359:2412-5. PubMed
  • Wright AA, Katz IT. Letting go of the rope--aggressive treatment, hospice care, and open access. N Engl J Med 2007; 357:324-7. PubMed
  • Wright AA, Katz IT. Tobacco tightrope--balancing disease prevention and economic development in China. N Engl J Med 2007; 356:1493-6. PubMed
  • Wright AA, Katz IT. Roe versus reality--abortion and women's health. N Engl J Med 2006; 355:1-9. PubMed
  • Katz IT, Wright AA. Preventing cervical cancer in the developing world. N Engl J Med 2006; 354:1110. PubMed
  • Wright AA, Katz IT. Home testing for HIV. N Engl J Med 2006; 354:437-40. PubMed
  • Wright AA, Katz IT. Bar coding for patient safety. N Engl J Med 2005; 353:329-31. PubMed
  • Katz IT, Wright AA. Collateral damage--Médecins sans Frontières leaves Afghanistan and Iraq. N Engl J Med 2004; 351:2571-3. PubMed
  • Wright AA, Katz IT. Match point? N Engl J Med 2004; 351:1165-7. PubMed