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D. Elizabeth O'Hanlon, PhD

Academic Title:

Research Associate

Primary Appointment:

Microbiology and Immunology


Health Sciences Facility III, 670 West Baltimore St, Baltimore 21201

Phone (Primary):


Education and Training

  • A.S. Liberal Arts Math/Science: Tompkins Cortland Community College, Dryden NY
  • B.S. Biochemistry and Molecular Biology: Wells College, Aurora NY
  • Ph.D. Biology (Integrated Cellular, Molecular, Developmental Biology and Biophysics Program): The Johns Hopkins University, Baltimore MD
  • Postdoctoral Fellow, The Mucosal Protection Laboratory, Department of Biophysics: The Johns Hopkins University, Baltimore MD

Research/Clinical Keywords

Microbiome, Human, Reproductive tract, Cervicovaginal, Vaginal, Probiotics, Prebiotics, Lactobacillus, Lactobacilli, Lactic acid, Bacterial Vaginosis, Infections, Sexually Transmitted Infections, Pregnancy, Miscarriage

Highlighted Publications


O’Hanlon DE, Lanier BR, Moench TR, Cone RA. Cervicovaginal fluid and semen block the microbicidal activity of hydrogen peroxide produced by vaginal lactobacilli. BMC Infect Dis 2010 May 19;10:120.

O’Hanlon DE, Moench TR, Cone RA. In vaginal fluid, bacteria associated with bacterial vaginosis can be suppressed with lactic acid but not hydrogen peroxide. BMC Infect Dis 2011 Jul 19;11:200. Moench TR, O’Hanlon DE, Cone RA. Evaluation of microbicide gel adherence monitoring methods. Sex Transm Dis 2012 May; 39(5):335-40.

O’Hanlon DE, Moench TR, Cone RA. Vaginal pH and microbicidal lactic acid when lactobacilli dominate the vaginal microbiota. PLoS One, 2013 Nov 6;8(11):e80074.