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Please Note: Applications are reviewed annually between January - March for the upcoming training periods. Training periods currently run from July 1 – June 30.

Meet our 2021-2022 T32 Fellows

Elizabeth Hammershaimb

Elizabeth ("AD") Hammershaimb, MD

AD previously worked as a post-baccalaureate intramural research fellow at the National Institutes for Allergy and Infectious Diseases studying Plasmodium falciparum, evaluating parasite-derived proteins expressed on the surface of human red blood cells, and the human immune response to CpG vaccine adjuvants. As a T32 training fellow at CVD, under the dual mentorship of James Campbell, MD, MS, Professor of Pediatrics, and Matthew Laurens, MD, MPH, Associate Professor of Pediatrics and of Medicine, and Director of the Pediatric Infectious Diseases Fellowship Program, she will help conduct a Phase I clinical trial of a CpG-adjuvanted anthrax vaccine and engage in clinical and translational research activities related to COVID-19 vaccines and vaccine uptake.

AD received her Bachelor's of Science in Foreign Service (BSFS) in International Politics from Georgetown University,  her MS in Biotechnology with a concentration in biodefense from Johns Hopkins University, and her MD from Drexel University. She completed her pediatric residency training at Inova Children's Hospital and is currently a pediatric infectious diseases fellow in the Department of Pediatrics Division of Infectious Diseases and Tropical Pediatrics.

an image of Robert Johnson

Robert Johnson, PhD

Robert Johnson joined the CVD as a Postdoctoral Fellow in August 2021. As a T32 training fellow at CVD, under the mentorship of Dr. Matthew Frieman, he seeks to determine how the comorbidities of obesity and diabetes increase morbidity and mortality following SARS-CoV-2 infection and also leads to decreased vaccine efficacy.

Robert received a Ph.D. in Microbiology from Auburn University, Alabama, in 2020. Robert’s dissertation research focused on sickness behavior and immunometabolism during an intracellular bacterial infection using Listeria monocytogenes.


Headshot of Shamima Nasrin, PhD

Shamima Nasrin, PhD

Shamima is a post-doctoral developing vaccines against Non-typhoidal Salmonella (NTS) under the mentorship of Dr. Sharon Tennant. As NTS disproportionately affects the very young (infants) and the elderly population, Shamima will be determining the safety, tolerability and efficacy of live attenuated S. Typhimurium vaccines in animal model that represent one of the target populations of these vaccines. Shamima will characterize the immunogenicity of the candidate S. Typhimurium vaccines in infant mice and predict how these vaccines would perform in infants.

Shamima received a PhD in Microbiology from Auburn University, Alabama in 2015. Shamima’s dissertation research focused on discovery of novel antimicrobial compounds against Methicillin resistant Staphylococcus aureus using soil metagenomic libraries.

Susan Portillo

Susana Portillo, PhD

Susana joined the CVD as a Postdoctoral Fellow in July 2020. She will be focusing on maternal-infant immunity under the mentorship of Dr. Marcela Pasetti. Her work will include evaluating qualitative and functional aspects of immune responses to Tetanus, Diphtheria and acellular Pertussis (TdaP) in pregnant women as well as the impact of maternal immunity on infant immune responses to routine vaccines.

Susana received a BS in Microbiology and PhD in Biosciences from The University of Texas at El Paso. Her dissertation focused on the use of alpha-Gal-containing neoglycoproteins as biomarkers and vaccine candidates for Chagas disease and Leishmaniasis. She is interested in immunology, with an emphasis in vaccinology, in vulnerable populations. 

CVD's T32 Program

Vaccines are one of the most cost-effective approaches in preventive medicine. The National Research Service Award T32 training grant is a unique opportunity designed to prepare MDs, PhDs, or those with equivalent degrees, for careers in vaccinology. Each T32 fellow selects the laboratory research track, clinical track, or combined laboratory and clinical track. The program offers all trainees broad exposure to both laboratory and clinical trial phases of vaccinology.

Program Administration

Executive Committee

Individuals interested in fellowship opportunities are encouraged to contact individual faculty and view faculty webpages.

Trainee Application Process

Eligibility /Qualifications:

Vaccinology Trainees will receive:

How to Apply:

Fill out the Application form...

Apply Now

If you do not meet the eligibility requirements for the T32, but would like to be considered for other post-doc training opportunities, please submit your CV to

For More Information:‌

Center for Vaccine Development and Global Health
University of Maryland School of Medicine
685 W. Baltimore Street, Room 480
Baltimore, MD 21201
+1 (410) 706-5328