Principal Investigator:

Johanna R. Elfenbein

Dr. Johanna Elfenbein earned her undergraduate degree from Harvard College, her DVM from the University of Florida, and her PhD from Texas A&M University. In addition to research training, Dr. Elfenbein pursued advanced clinical training in large animal internal medicine and is a Diplomate of the American College of Veterinary Internal Medicine. Her love for Salmonella came from years of clinical practice where she was amazed by the spectrum of disease caused by the organism. In her spare time, Dr. Elfenbein enjoys running, hiking, cycling, and travel to exotic places.

Eddy Cruz

Position title: DVM/PhD Student

Eddy completed his undergraduate degree at North Carolina State University, where he majored in microbiology. Currently, he is enrolled in a combined DVM/PhD program here at UW-Madison. He is working on a project aimed at…

Sarah Raabis

Credentials: DVM, PhD, DACVIM

Position title: Post-doctoral associate

Sarah Raabis grew up in central Massachusetts and completed her undergraduate degree in Biology at Saint Anselm College in Manchester, NH.  While in college, she worked as a livestock intern for Heifer International at Overlook…

Trina Westerman

Credentials: DVM, PhD, DACVIM

Position title: Post-doctoral associate

Trina Westerman grew up in Illinois where she completed her undergraduate degree in Molecular and Cellular Biology at the University of Illinois at Urbana-Champaign. While pursuing her DVM at Ohio State University, she worked in…


Unofficial “Lab” partner of the ElfenbeinLab