Infectious Diseases: Sexually Transmitted Infections (Non-HIV)

Sexually transmitted infections (STIs) are very common and include human papilloma virus, herpes simplex virus, chlamydia, gonorrhea, syphilis, mpox, and others that are transmitted through vaginal, oral, or anal sex. Our research focuses on the epidemiology of STIs, mail-in STI testing, effective prevention and treatment strategies, characterizing and developing approaches for addressing antimicrobial resistance among organisms, developing rapid diagnostic tests, and the role of the vaginal microbiome. In addition to several outpatient practice locations at Johns Hopkins Medicine, our clinicians work closely with colleagues in the Baltimore City Health Department (BCHD) to provide STI prevention, diagnosis and treatment services in Baltimore. Matthew Hamill, MBCHB, PhD, MPH, is the Clinical Chief of the BCHD STI program.

In the News

Syphilis making a comeback, health officials warn. CDC map shows where risk is highest

2026-05-01 | News Nation | Khalil Ghanem
Syphilis cases in Baltimore infants nearly quadruple the national rate

2025-10-09 | Baltimore Banner | Barbara Wilgus
Don't forget these infectious, risk-based disease screenings in primary care

2025-06-04 | MedScape | Matthew Hamill

All News

Congenital Syphilis

Congenital syphilis is preventable & treatable. Learn more in this video created by Elise Butler, a graduate student in the Department of Art as Applied to Medicine at the Johns Hopkins University School of Medicine.

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Infectious Disease Researchers

Joel N. Blankson, MD PhD
- Professor of Medicine
Research Interests: Natural Control of HIV-1 Infection
Kelly Gebo, MD MPH

Research Interests: Health care utilization, clinical outcomes research, HIV, COVID, long COVID, mpox, quality improvement, health care policy

Research Publications

Google Scholar PubMed
Khalil G. Ghanem, MD
- Deputy Director of Education, Department of Medicine, Johns Hopkins Bayview Medical Center
- Professor of Medicine
Research Publications

PubMed
Matthew Hamill, MBChB PhD MPH
- Associate Professor of Medicine
Research Interests: HIV/AIDS, POC technology, PrEP/PEP, sexually transmitted infections, Sub Saharan Africa
Research Publications

Google Scholar
Joyce Jones, MD MS
- Assistant Professor of Medicine
Yuka Manabe, MD
- Associate Director of Global Health Research and Innovation
- Professor of Medicine
Research Publications

PubMed
Johan Melendez, PhD
- Assistant Professor of Medicine
Kathleen Raquel Page, MD
- Professor of Medicine
Susan Tuddenham, MD MPH
- Associate Professor of Medicine
Research Interests: Sexually transmitted diseases
Jonathan Mark Zenilman, MD
- Professor of Medicine

Centers, Labs, and Programs

Center for Recurrent Vaginal Infectious

301 Mason Lord Drive, Suite 3200
Baltimore, MD 21224

Scheduling Information

Infectious Diseases Patient Care Providers

Patricia Andrea Barditch-Crovo, MD

Primary Location: The Johns Hopkins Hospital, Baltimore, MD
Christie A R Basseth, MD

Primary Location: The Johns Hopkins Hospital, Baltimore, MD
Stephen Berry, MD PhD
- Vice Chair for Quality, Safety and Service, Department of Medicine
Primary Location: The Johns Hopkins Hospital, Baltimore, MD
Sherilyn Camille Brinkley, CRNP

Primary Location: The Johns Hopkins Hospital, Baltimore, MD
Todd T. Fojo, MD MHS

Primary Location: The Johns Hopkins Hospital, Baltimore, MD
Kelly Gebo, MD MPH
Khalil G. Ghanem, MD
- Deputy Director of Education, Department of Medicine, Johns Hopkins Bayview Medical Center
Primary Location: The Johns Hopkins Hospital, Baltimore, MD
Lee Elliot Gilman, CRNP

Primary Location: The Johns Hopkins Hospital, Baltimore, MD
Sarah Rives Gray, CRNP MPH

Primary Location: The Johns Hopkins Hospital, Baltimore, MD
David Griffith, MD

Primary Location: The Johns Hopkins Hospital, Baltimore, MD
Matthew Hamill, MBChB PhD MPH

Primary Location: The Johns Hopkins Hospital, Baltimore, MD
Erica Nicole Johnson, MD

Primary Location: The Johns Hopkins Hospital, Baltimore, MD
James A. Ladd, MD

Primary Location: The Johns Hopkins Hospital, Baltimore, MD
Mamuka Machaidze, MD
- Assistant Fellowship Program Director, Division of Infectious Diseases
Primary Location: Johns Hopkins Bayview Medical Center, Baltimore, MD
Julie McArthur, CRNP

Primary Location: The Johns Hopkins Hospital, Baltimore, MD
Michael Melia, MD
- Vice Chair for Education, Department of Medicine
Primary Location: Johns Hopkins Health Care & Surgery Center - Green Spring Station, Lutherville, Lutherville, MD
Susan Tuddenham, MD MPH

Primary Location: Johns Hopkins Bayview Medical Center, Baltimore, MD
Bill l Floyd Wright, DO MPH

Primary Location: Johns Hopkins Bayview Medical Center, Baltimore, MD
Jonathan Mark Zenilman, MD

Primary Location: Johns Hopkins Bayview Medical Center, Baltimore, MD

INFECTIOUS DISEASES Sexually Transmitted Infections (Non-HIV)

In the News

Syphilis making a comeback, health officials warn. CDC map shows where risk is highest

Syphilis cases in Baltimore infants nearly quadruple the national rate

Don't forget these infectious, risk-based disease screenings in primary care

Congenital Syphilis

The Latest in Research

Infectious Disease Researchers

Clinical Trials

Recently Awarded Grants

Centers, Labs, and Programs

Outpatient Care Locations

Center for Recurrent Vaginal Infectious

Infectious Diseases Patient Care Providers