Selected publications, by topic

Migration and HIV: My migration and HIV work is mostly empirical; I design and implement surveys and analyze survey data with standard statistics, and am beginning to use qualitative methods as well. Two papers help unify and ground research in migration and HIV: an AIDS & Behavior (2014) paper on the conceptual framework and research methods for studying migration and HIV, and a comment in The Lancet HIV (2016) on the importance of geographical mobility and contextual factors on global HIV disparities. I have also published on innovative ways to measure short-term mobility and sexual network characteristics (Demographic Research, 2014). My empirical work on migration and HIV uses a network perspective, to shift the focus from individual risk behaviors for acquiring HIV to behaviors that may aid the transmission of HIV. I found that mobile individuals are more likely to have concurrent partnerships (e.g. overlapping partnerships in time) (PLoS ONE, 2013), and explained how mobile individuals could connect sexual networks across space (i.e. bridging) in a recent Social Science & Medicine article (2017).


  • Camlin C, Cassels S, Seeley J. (2018) “Editorial: Bringing population mobility into focus to achieve HIV prevention goals.” JIAS: Journal of the International AIDS Society 21(S4):e25136. (PMCID: PMC6053544)

  • Cassels S, Camlin C, Seeley. (2018) “One Step Ahead: timing and sexual networks in population mobility and HIV prevention and care.” JIAS: Journal of the International AIDS Society 21(S4):e25140. (PMCID: PMC6053478)

  • Cassels S, Jenness SM, Biney AAE, Dodoo FN. (2017) “Geographic mobility and potential bridging for sexually transmitted infections in Agbogbloshie, Ghana.” Social Science & Medicine 184: 27-39. (PMCID: PMC5525941)

  • Cassels S, Camlin CS. (2016) “Geographical mobility and heterogeneity of the HIV epidemic.” The Lancet HIV 3(8): e339-e341.

  • Cassels S, Jenness SM, Biney AAE, Ampofo WK, Dodoo FN. (2014) “Migration, sexual networks, and HIV in Agbogbloshie, Ghana.” Demographic Research 31: 861-888. (PMCID: PMC4214381)

  • Cassels S, Jenness SM, Khanna A. (2014) “Conceptual Framework and Research Methods for Migration and HIV Transmission Dynamics.” AIDS & Behavior 18(12): 2302-2313. (PMCID: PMC4029933)

  • Cassels S, Manhart L, Jenness S, and Morris M. (2013) “Short-term mobility and increased partnership concurrency among men in Zimbabwe.” PLoS ONE 8(6): e66342.


Epidemic models of HIV: The second main area of my research is constructing and simulating mathematical models of HIV transmission dynamics. My niche is incorporating network structure and detailed behavior in these models so that they represent complex social and behavioral determinants. These models typically answer two types of questions: which determinants of HIV transmission are the most important in ongoing transmission, and what impact could an intervention have on the system? My current modeling project examines rapid HIV self-testing strategies on HIV incidence among men who have sex with men.

  • Luo W, Katz DA, Hamilton DT, McKenney J, Jenness SM, Goodreau SM, Stekler JD, Rosenberg ES, Sullivan PS, Cassels S. (2018) “Development of an agent-based model to investigate the impact of HIV self-testing programs on men who have sex with men in Atlanta and Seattle.” JMIR Public Health and Surveillance 4(2):e58.   (PMCID: PMC6045793)

  • Roberts ST, Khanna A, Barnabas RV, Goodreau SM, Baeten JM, Celum C, Cassels S. (2016) “Estimating the impact of universal antiretroviral therapy for HIV serodiscordant couples through home HIV testing: Insights from mathematical models.” JIAS: Journal of the International AIDS Society 19:20864. (PMCID: PMC4865806)

  • Jenness SM, Goodreau SM, Morris M, Cassels S. (2016) “Effectiveness of Combination Packages for HIV-1 Prevention in Sub-Saharan Africa Depends on Partnership Network Structure: A Mathematical Modeling Study.” Sexually Transmitted Infections 92(8): 619-624. (PMCID: PMC490257)

  • Khanna A, Roberts ST, Cassels S, Ying R, John-Stewart G, Goodreau SM, Baeten JM, Murnane P, Celum C, Barnabas RV. (2015) “Estimating PMTCT’s Impact on Heterosexual HIV Transmission: A Mathematical Modeling Analysis.” PLoS ONE 10(8): e0134271. (PMCID: PMC4532442)

  • Katz DA, Cassels S, Stekler JD. (2014) “Replacing Clinic-based Tests with Home-use Tests May Increase HIV Prevalence among Seattle Men Who Have Sex with Men: Evidence from a Mathematical Model.”Sexually Transmitted Diseases 41(1): 2-9. (PMCID: PMC3955208)

  • Goodreau SM, Cassels S, Kasprzyk D, Montaño D, Greek A, and Morris M. (2012) “Concurrent partnerships, Acute Infection and HIV Epidemic Dynamics among Young Adults in Zimbabwe.” AIDS and Behavior 16(2): 312-322.

  • Cassels S and Goodreau SM. (2011) “Interaction of mathematical modeling and social and behavioral HIV/AIDS research.” Current Opinion of HIV/AIDS 6:119–123.

  • Cassels S, Menza TW, Goodreau SM, and Golden MR. (2009) “HIV serosorting as a harm reduction strategy: Evidence from Seattle, Washington.” AIDS 23(18): 2497-2506. (PMCID: PMC2886722)

  • Cassels S, Menza TW, Goodreau SM, and Golden MR. (2010) “Available evidence does not support serosorting as an HIV risk reduction strategy -- Author's Reply.” AIDS 24(6): 936–938. (PMCID: PMC4026136).

  • Cassels S, Clark SJ, and Morris M. (2008) “Mathematical Models for HIV Transmission Dynamics: Tools for social and behavioral science research.” JAIDS: Journal of Acquired Immune Deficiency Syndromes 47(Supplement 1): S34 – S39. (PMCID: PMC3387534)

  • Pearson, CR., Kurth AE, Cassels S, Martin DP, Simoni JM, Hoff P, Matediana E, and Gloyd S. (2007) “Modeling Transmission Risk among HIV-positive Mozambicans Three Months before Initiating HAART.” AIDS Care 19(5): 594-604. (PMCID: PMC4226799)


Sexual behavior, sexual networks, and infectious disease epidemiology

  • Cassels S, Jenness SM, Biney AAE. (2019) “Coital frequency and male concurrent partnerships during pregnancy and postpartum in Agbogbloshie, Ghana.” AIDS and Behavior: ePub ahead of print.

  • Toren KG, Buskin SE, Dombrowski JC, Cassels S, Golden MR. (2016) “Time from HIV diagnosis to viral load suppression: 2007-2013.” Sexually Transmitted Diseases 43(1): 34-40. (PMCID: PMC4902572)

  • Jenness SM, Biney AAE, Ampofo WK, Dodoo FN, Cassels S. (2015) “Minimal Coital Dilution in Accra, Ghana.” JAIDS: Journal of Acquired Immune Deficiency Syndromes 69(1): 85-91.

  • Huang CE, Cassels S, Winer RL. (2015) “Self-reported sex partner dates for use in measuring concurrent partnerships: Correspondence between two assessment methods.” Archives of Sexual Behavior 44(4): 873-883.

  • Pearson CR, Cassels S. (2014) “Place and sexual partnership transition among young American Indian and Alaska Native Women.” AIDS & Behavior. 18(8): 1443-1453.

  • Cassels S and Katz DA. (2013) “Seroadaptation among men who have sex with men: emerging research themes.” Current HIV/AIDS Reports 10(4): 305-313.

  • Cassels S, Pearson CR, Walters K, Simoni JM, and Morris M. (2010) “Sexual partner concurrency and sexual risk among gay, lesbian, bisexual and transgender American Indian/Alaska Natives.” Sexually Transmitted Diseases 37(4): 272-278. (PMCID: PMC3118268)

  • Cassels S and Singer B. (2010) “Population Decline Induced by Gonorrhea and Tuberculosis Transmission: Micronesia during the Japanese Occupation, 1919 – 1945.” Journal of Population Research 27(4): 293-313. (PMCID: PMC3109672)


Population, health, and environment

  • Tuholske C, Tane Z, López-Carr D, Roberts D, Cassels S. (2017) “Thirty Years of Land Use/Cover Change in the Caribbean: Assessing the Relationship between Urbanization and Mangrove Loss in Roatán, Honduras.” Applied Geography 88: 84-93.

  • de Sherbinin, A, Carr D, Cassels S, and Jiang L. (2007) “Population and Environment.” Annual Review of Environment and Resources 32: 345 – 373. (PMCID: PMC2792934)

  • Cassels S. (2006). “Overweight in the Pacific: Links between Foreign Dependence, Global Food Trade, and Obesity in the Federated States of Micronesia.” Globalization and Health 2(10): 1-8. (PMCID: PMC1533815)

  • Cassels S, Curran SR, and Kramer R. (2005). “Do migrants degrade coastal environments? Migration, natural resource extraction and poverty in North Sulawesi, Indonesia.” Human Ecology 33(3): 329-363.


© Susan Cassels 2015 All right reserved.