Dr. Baeten's research focuses on epidemiologic and biologic risk factors for acquisition of HIV and sexually transmitted infections, and clinical trials of interventions to prevent HIV transmission.Heffron R, Donnell D, Rees H, Celum C, Mugo N, Were E, de Bruyn G, Nakku-Joloba E, Ngure K, Kiarie J, Coombs RW, Baeten JM for the Partners in Prevention HSV/HIV Transmission Study Team. Hormonal contraceptive use and risk of HIV-1 transmission: a prospective cohort analysis. Lancet Infectious Diseases 2012; 12:19-26. PMCID 3266951. Hallett T, Baeten JM, Heffron R, Barnabas R, de Bruyn G, Cremin I, Delany S, Garnett GP, Gray G, Johnson L, McIntyre J, Rees H, Celum C. Optimal uses of antiretrovirals for prevention in HIV-1 serodiscordant heterosexual couples in South Africa: a modelling study. PLoS Medicine 2011; 8:e1001123. PMCID: PMC3217021.