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Megan Birkhold, MD

Megan is a general surgery resident currently in her dedicated research years. She has experience in clinical research and is working on typhoid intestinal perforation and typhoid vaccine research. Primary Mentor: Dr. Neuzil

Myeongjin Choi

Myeongjin Choi, DVM, PhD, DABT

Myeongjin is experienced in the preclinical development of a quadrivalent vaccine against Klebsiella pneumoniae and Pseudomonas aeruginosa. She also designed various bacterial infection models in rodents to determine vaccine efficacy and assessed the immunogenicity of the vaccine in in vitro and in vivo. Primary Mentor: Dr. Cross


Emily Deichsel, PhD

Emily is an epidemiologist with experience in randomized control trial design and implementation as well as longitudinal data analysis. Her research focuses on pediatric gut health, growth, and survival among vulnerable populations. Primary Mentor: Dr. Kotloff

Meagan Deming, MD, PhD

Meagan Deming, MD, PhD

Amanda Driscoll, PhD

Amanda Driscoll, PhD


DeAnna Friedman-Klabanoff, MD

DeAnna has experience and training in clinical vaccine trial leadership and use of high-throughput technologies such as peptide microarrays to analyze vaccine-induced and natural immunity to Plasmodium falciparum. She is also a board eligible Pediatric Infectious Disease clinician with a special interest in global health and travel and tropical medicine. Primary Mentor: Dr. Laurens

Female Staff

Elizabeth Hammershaimb, MD

Elizabeth ("AD") is a board-certified pediatrician who completed a Master's degree in biotechnology with an emphasis on biodefense prior to attending medical school. She also has basic science research experience in Plasmodium falciparum, including evaluation of parasite-derived proteins expressed on the surface of human red blood cells and the human immune response to CpG vaccine adjuvants. Her clinical research interests include antimicrobial stewardship, vaccine development, global health, and outbreak preparedness and response. Primary Mentor: Dr. Laurens

Jose Lemme Dumit, PhD

Jose Lemme Dumit, PhD

Jose’s research areas of interests are mucosal immunology, immune mechanisms of response and vaccines and immune therapies to prevent enteric infections. He has expertise in the development and characterization of human ex vivo immune enteroid models. He has training in tissue culture, imaging techniques, flow cytometry technique, in vitro immune cells functional assays, and microbiology. Primary Mentor: Dr. Pasetti

Robert McCann

Robert McCann, PhD

Rob is an entomologist with ten years of experience studying the ecology of malaria vectors. His skill set includes sampling methods for mosquitoes to identify spatial and temporal patterns, collecting environmental variables using both local and remote sensing, molecular diagnostics using ELISA, PCR and targeted sequencing, and analyzing landscape-level patterns using GIS and geostatistical models. Primary Mentor: Dr. Laufer

Shamima Nasrin

Shamima Nasrin, PhD

Shamima is experienced in the development of live attenuated vaccines against nontyphoidal Salmonella. She has advanced training in Molecular Microbiology including modifying bacterial genomes for the generation of new vaccine strains. She also has training in bacterial pathogenesis and determining functionality of antibodies that are raised in response to oral vaccines in mouse model. Primary mentor: Dr. Tennant

Esther Ndungo

Esther Ndungo

Esther's main interest is in elucidating immune mechanisms following natural infection to inform the development or improvement of vaccines against enteric pathogens in vulnerable populations. She has expertise in anti-microbial functional analysis and molecular biology techniques and is training in genomic data analysis. Primary Mentor: Dr. Pasetti.

Sri Ranganathan

Sridevi Ranganathan, PhD

Sri is a microbiologist and molecular biologist with experience studying host-pathogen interactions in highly infectious bacterial agents such as Mycobacterium tuberculosis and Shigella flexneri. She has advanced training studying DNA-protein interactions, using complex tissue culture models and to work in a BSL-3 environment. At the CVDGH, she is working on understanding Shigella pathogenesis in the human enteroid model. She aims to evaluate the usefulness of this model in preclinical testing of live attenuated vaccine strains. Primary Mentor: Dr. Barry

Shikha Shrivastava

Shikha Shrivastava

Shikha is an experienced immunologist and microbiologist. Her area of expertise is Viral Immunology, Molecular-biology and Vaccinology. Currently she is working on the development and validation of functional assays to predict the Shigella vaccine efficacy. Her major research interest is to study the maternal and fetal determinants of immunity to vaccines. Primary Mentor: Dr. Pasetti.