Environmental Sciences

Environmental Sciences Experts

Seth Welles

Epidemiology and Biostatistics
Drexel University
United States of America


"Dr. Welles received doctoral training in both cellular/molecular epidemiology at Boston University and viral epidemiology at the Harvard School of Public Health. He conducts research and mentors students in studies of infection and chronic disease, including viral carcinogenesis and HIV/AIDS. His earliest epidemiologic work was focused on studies of immune suppression and adult T-cell leukemia/lymphoma caused by the human T-cell lymphotropic virus type I (HTLV-I). Subsequently, he worked as an epidemiologist and biostatistician with the AIDS Clinical Trials Group to assess the utility of using molecular markers of HIV antiretroviral drug resistance, HIV-1 viral load, and CD4 cell number as prognostic and surrogate markers of clinical disease. "

Research Interest

Mental health and Behavioral health


  • "Sweet T, Polansky M, Welles SL. Mediation of HIV/STI Risk by Mental Health Disorders Among Persons Living in the United States Reporting Childhood Sexual Abuse. JAIDS 2013; 62:81-9 "

  • Baliban SM, Michael A, Shammassian B, Mudakha S, Khan AS, Cocklin S, Zentner I, Latimer BP, Bouillaut L, Hunter M, Marx P, Sardesai NY, Welles SL, Jacobson JM, Weiner DB, Kutzler MA. An Optimized, Synthetic DNA Vaccine Encoding the Toxin A and Toxin B Receptor Binding Domains of Clostridium difficile Induces Protective Antibody Responses In Vivo. Infect Immun 2014; 82:4080-91

  • LeVasseur MT, Goldstein ND, Welles SL. A public health perspective on HIV/AIDS in Africa: Victories and unmet challenges.  Pathophysiology 2014; 21: 237-56.

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