Quinn Research Group

Our research is focused primarily on epidemiologic, immunologic and clinical features of HIV, STDs and COVID-19 infections both domestically and internationally. Specifically, we examine the epidemiologic features of HIV-1 infections in developing countries and the United States, while assessing the effectiveness of biomedical interventions to control HIV, including circumcision, prevention of mother-to-child transmission, pre-exposure prophylaxis, and vaccine development. We have examined the various methods of quantifying the latent HIV reservoir in virally suppressed Ugandan men and women with identification of immunologic predictors of the reservoir size. In addition, we are interested in exploring the continuing syndemic between HIV and sexually transmitted infections and their roles in prevention, PrEP and clinical complications. With the advent of COVID, the group pivoted some of our expertise to examine the serologic and cellular responses to SARS-CoV-2 and other coronaviruses to aid in defining the epidemiologic features, immunologic features and clinical responses to COVID-19 in the US and Africa.

Thomas C. Quinn, M.D., M.Sc. (He/Him/His)

Chief, International HIV/STD Section

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Specialty(s): Infectious Disease, Internal Medicine


M.Sc., 1970, University of Notre Dame, IN

M.D., 1974, Northwestern University, Evanston, IL

Dr. Quinn obtained his M.D. from Northwestern University. He was a research associate in infectious diseases in the NIAID Laboratory of Parasitic Diseases and completed a fellowship in infectious diseases at the University of Washington. He returned to NIAID and later became chief of the Section on International HIV/STI Research. In 2006, he was appointed as associate director for International
Thomas C. Quinn, M.D., M.Sc.

Oliver Laeyendecker, M.S., M.B.A., Ph.D. (He/Him/His)


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Ph.D., Johns Hopkins University

M.B.A., Johns Hopkins University

M.S., Johns Hopkins University

B.A., Reed College

Languages Spoken: Dutch

Dr. Laeyendecker is a laboratory scientist and infectious disease epidemiologist engaged in studies of SARS-CoV-2, HSV-2, HCV and HIV both domestically and internationally. He uses use of molecular and serologic biomarkers to determine the movement and pathologic impact of these viruses on human populations. His particular area of expertise is the development and application of methods for
Portrait of Oliver Laeyendecker, MS, MBA, Ph.D.

Steven James Reynolds, M.D., M.P.H. (He/Him/His)

Senior Clinician

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M.P.H., 2002, Johns Hopkins School of Public Health

M.D.C.M., 1994, McGill University

B.Sc., University of Toronto

Languages Spoken: French

Dr. Reynolds obtained his M.D. from McGill University in 1994 and went on to receive specialty certification in Internal Medicine, Medical Microbiology and Infectious Diseases. He completed his M.P.H. in 2002 at Johns Hopkins University while working on an HIV prevention collaboration in Pune, India. He is a senior clinician at NIAID and an associate professor of medicine and epidemiology at Johns
Portrait Steven James Reynolds, MD, MPH

Andrew Redd, Ph.D. (He/Him/His)

Staff Scientist

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Ph.D., Harvard University
B.Sc., North Carolina State University

Dr. Redd explores several areas of HIV virology including the role of HIV Superinfection in natural disease, as well as viral diversity in the African HIV/AIDS pandemic.

Portrait of Andrew Redd, Ph.D.

Former Research Group Members

2007 - Melissa (Riedesel) Rolfes, postbac IRTA, obtained her Ph.D. in Epidemiology at the University of Minnesota School of Public Health, then became an Officer in the Epidemic Intelligence Service at the Centers for Disease Control and Prevention (CDC) and now an Epidemiologist in the Influenza Division, CDC

2008 - Thoai Ngo, postbac IRTA, MHS from Johns Hopkins School of Public Health, Ph.D. in demography and epidemiology from London School for Hygiene and Tropical Medicine, currently Vice Present of Social and Behavioral Science Research for Population Council

2008 - Mona Rezapour, postbac IRTA, from Johns Hopkins University School of Medicine, now is a practicing clinician in Gastroenterology at the Ronald Reagan UCLA Medical Center

2009 - Samantha Conroy, postbac IRTA, graduated from Geisinger Commonwealth Medical College, a locum tenens clinician currently in Hawera, New-Zealand

2010 - Aleisha Collinson-Streng, postbac IRTA, graduated from University of Maryland School of Nursing, currently Senior Research Nurse at Johns Hopkins School of Medicine, Department of Pediatrics

2013 - Sarah K. Wendel, postbac IRTA graduated from Georgetown University Medical School, Emergency Medicine Fellow at Wake Forest University, currently an Instructor in Emergency Medicine at the University of Colorado

2014 - Andrew Longosz, postbac IRTA, MBA/MPH program at the Johns Hopkins University, currently Consultant at Quintiles IMS

2014 - Melanie (Frank) Kiener, postbac IRTA, graduated from Emory University School of Medicine, currently an internal medical specialist at the University of Washington Neighborhood Belltown Clinic

2015 - Eshan Patel, postbac IRTA, MPH student at the Johns Hopkins Bloomberg School of Public Health, currently Ph.D. student in the Department of Epidemiology at the Johns Hopkins Bloomberg School of Public Health

2016 - Allison Kirkpatrick, postbac IRTA, graduated from University of Maryland Medical School, currently a medical resident at the Huntsman Cancer Institute at the University of Utah

2018 - Anna Eisenberg, postbac IRTA currently at medical school at University of Michigan

2019 - George Mwinnyaa, currently Ph.D. student in the Department of International Health, Johns Hopkins Bloomberg School of Public Health.

2019 - Jada Hackman, postbac IRTA, currently Ph.D. student at University College of London

2021 - Owen Baker, postbac IRTA, currently a research specialist at the Johns Hopkins School of Medicine.

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