Faculty Researchers

Sexually Transmitted Diseases

Whether seeking a research collaborator, mentor, or research information, we invite you to explore the biographies of our investigators.

Faculty Researchers

Charlotte A. Gaydos, DrPH, MPH

Charlotte A. Gaydos, DrPH, MPH is a Professor of Medicine and Director of the Johns Hopkins Center for the Development of Point of Care Tests for Sexually Transmitted Diseases,  She received her BS in Medical Technology and her MS in Medical Microbiology from West Virginia University.  Her MPH and DrPH in Immunology and Infectious Diseases were received from the Johns Hopkins University Bloomberg School of Public Health.  Dr. Gaydos is the Director of the Johns Hopkins University International STI, Respiratory Diseases, and Biothreat Research Laboratory.  She has 45-year laboratory expertise in microbiology, has authored 27 book chapters, over 400 research articles and over 600 abstracts and oral presentations.

Dr. Gaydos has conducted multiple clinical trials for novel diagnostics regarding STI and respiratory pathogens.  Her internet recruitment of at-home, self-collected samples for STI screening has been an effective outreach program.  She was recently awarded a NIH grant for development of a rapid test for gonorrhea that will also detect antibiotic resistance. Center for Point-of-Care Tests for Sexually Transmitted Diseases; Gaydos Research Dashboard and Publications

Khalil Ghanem, MD, PhD

Khalil Ghanem, MD, PhD is an Associate Professor of Medicine.  He is the Deputy Director of Education for the Department of Medicine at Johns Hopkins Bayview Medical Center.  His research focuses on genitourinary infections, in particular syphilis and the vaginal microbiome.  He was a consultant to the Centers for Disease Control and Prevention on the development of the 2010 and 2015 Adult Syphilis Treatment Guidelines, and is an Associate Editor of the journal Sexually Transmitted InfectionsSTD/HIV Prevention Training Center at Johns Hopkins; Ghanem Research Dashboard and Publications

Matthew Hamill, MBChB, MPH, MSc, PhD

Matthew Hamill, MBChB, MPH, MSc, PhD is an Assistant professor of medicine.  He received his medical degree in 1998 (MB ChB, Bristol), trained in internal medicine (MRCP, London) and STD/HIV in London, UK.  He spent 3 years as a MRC Clinical Research Fellow and conducted research in Soweto, South Africa.  He is interested in the spectrum of STD/HIV: prevention, vaccine development, treatment, complications, access and retention in care. Hamill Research Dashboard and Publications

Yukari Manabe, MD

Yukari Manabe, MD is a Professor of Medicine.  Her research efforts include evaluation of point-of-care diagnostics in the IDI translational lab.  In collaboration with Makerere University in Uganda, she tests POC STD diagnostics in a resource-limited setting/low income country where POC diagnostics are often the only ones available due to poor laboratory infrastructure.  Dr. Manabe obtained her undergraduate degree from Yale University and her MD from Columbia University.  After completing both her residency in Internal Medicine and fellowship in Infectious Diseases at Johns Hopkins University, she joined the faculty in 1999. Manabe Research Dashboard and Publications

William Osburn, MS, PhD

William Osburn, MS, PhD is an Assistant Professor of Medicine at the Johns Hopkins University School of Medicine.  His research efforts include novel point-of-care diagnostic tests.  Dr. Osburn received his undergraduate degree from Bowdoin College, M.S. at Northeastern University and his Ph.D. at the Johns Hopkins Bloomberg School of Public Health. Osburn Research Dashboard and Publications

Anne Rompalo, MD

Anne Rompalo, MD is a Professor of Medicine.  She has authored more than 150 peer-reviewed articles, several chapters, is an editor and expert reviewer for several journals and serves on multiple national and international advisory, conference and scientific committees in the fields of sexually transmitted diseases and HIV.  For more than 20 years, Dr. Rompalo has served as the medical director of the STD/HIV Prevention Training Center and previously held the position of Acting Medial Director for the Baltimore City Health Department sexually transmitted diseases clinics.

As one of two Principal Investigators of the Baltimore site HIV Epidemiology Research Study (HERS), Dr. Rompalo has extensive experience in the development, conduct, and analysis of large clinical trials. STD/HIV Prevention Training Center at Johns Hopkins; Rompalo Research Dashboard and Publications

Susan Tuddenham, MD, MPH

Susan Tuddenham, MD, MPH is an Assistant Professor of Medicine in the Division of Infectious Diseases, Johns Hopkins Bayview.  She earned her M.D. from the David Geffen School of Medicine at UCLA, her M.P.H. from the Johns Hopkins Bloomberg School of Public Health, and completed an Internal Medicine Residency and Infectious Diseases Fellowship at the Johns Hopkins Hospital.

Her research interests are in Sexually Transmitted Infections (STI), HIV, and the human microbiome.  She currently holds an NIH K23 award focused on the impact of hormonal contraception on dysbiosis and the vaginal microbiome, and smaller grants investigating the impact of HIV on the gut microbiome.  She also maintains an outpatient HIV clinic, an outpatient ID and STI clinic, and attends on the inpatient services for general ID. Tuddenham Research Dashboard and Publications

Jonathan Zenilman, MD

Jonathan Zenilman, MD is a Professor of Medicine and the Chief of the Division of Infectious Diseases at Johns Hopkins Bayview Medical Center.  Dr. Zenilman conducts research related to sexually transmitted diseases (STDs).  His work includes develop biological markers for sexual behavior, diagnostic test evaluation, and Phase 1-Phase 3 clinical trials support.  He collaborates with partners such as the Baltimore City Health Department and the CDC in studies of STD trends, and has a specific interest in antimicrobial resistance in Neisseria gonorrhea, which has been a career long interest.  Additionally, his team studies nosocomial infections at Johns Hopkins Bayview Medical Center, with a focus on developing an antimicrobial control program and have an active program collaborating with long term care facilities. Zenilman Research Dashboard and Publications