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A cross-divisional department spanning

One Health Laboratory at Johns Hopkins University

One Health Research Team


We are always looking for talented students and post-doctoral fellows to join our team.


Meghan Frost Davis, PhD, DVM, MPH

Associate Professor
Director, One Health Laboratory at Johns Hopkins University
Department of Environmental Health and Engineering

As a molecular epidemiologist and an environmental microbiologist, Meghan studies the interface of bacteria and hosts to reduce microbe-mediated disease in humans and animals. Her work applies the principles of one health and microbial ecology, evaluating target microbes and bacterial genes specifically and the larger microbial community (microbiome) broadly. She also evaluates non-infection outcomes, specifically asthma, from exposure to bacterial agents and their toxic products. Designing and testing interventions to combat the rise of bacterial antimicrobial resistance and both infection and non-infection outcomes related to microbial exposures in a one health context is the goal of her research career.




Kathryn Dalton, PhD, VMD, MPH
Postdoc | 2017-










Justin Edwards
Research Technologist










Paige Laughlin
Senior Research Specialist










Shanna Ludwig, PhD
Research Technologist

Shanna's has a background in botany, having completed a Master’s degree in Plant Diversity (University of Reading, UK) followed by a PhD from the University of Bristol (UK). For her PhD, she studied ecological and evolutionary genetics, focusing on reproductive biology and speciation in diploid and polyploid Sorbus populations.








Amanda McCormack
PhD Candidate | 2020-










Sharmaine Miller, PhD
Postdoc | 2020-










Julianna Nechin
ScM Student | 2019-










Kaitlin Waite, DVM MPH
Postdoc | 2019-









Research Team Alumni

  • 2016-20 | Alexandra Lorentz, PhD
  • 2016-20 | Gabriel Innes, VMD, PhD
  • 2016-18 | Christopher Nelson, RN, MPH
  • 2017-18 | Maya Spaur, MHS
  • 2017-18 | Zoë Johnson, Mississippi State University, MS Student
  • 2017-18 | Cusi Ferradas, MPH
  • 2017-18 | Raquel Serruya, MHS
  • 2016-18 | Isha Pandya, ScM
  • 2016-17 | Camille Effler, DVM | U.S. Army
  • 2016-17 | Katie Sabella, DVM | Veterinarian
  • 2016-17 | Po-Yang Tsou, MPH | Medical Resident
  • 2015-16 | Kristopher Spicer
  • 2015-16 | Andrea Christ
  • 2015-16 | Caitlin Cotter, DVM - MPH Student | 2015-16  | CDC Epidemiology Intelligence Service
  • 2014-15 | Jacqueline Ferguson  | University of California, Berkeley, PhD Student
  • 2014-15 | Daniel Laucks, VMD, MPH | Food and Drug Administration
  • 2014-15 | Jonathan Shahbazian, BS, MPH
  • 2013-14 | Emily Pieracci, DVM, MPH  | CDC Epidemiology Intelligence Service
  • 2012-13 | Amy Brazil, VMD, MPH  |  Food and Drug Administration
  • 2011-12 | Sally Ann Iverson, DVM, MPH  | CDC Epidemiology Intelligence Service

2017 (Summer)

  • Zoë Johnson

2016 (Summer)

2015 (Summer)

What's a VMD? Both a DVM and a VMD are veterinary doctoral degrees, the animal health equivalent of a MD.