Sean Crosson, Ph.D.

Sean Crosson, Ph.D.

Michigan State University

Sean Crosson, Ph.D, is a professor of microbiology, genetics, and immunology at Michigan State University. He studies mechanisms by which bacteria adapt to diverse environments, including freshwater, soil and the interior of mammalian cells. 

Crosson received his B.A. in biology from Earlham College, his Ph.D. in molecular biophysics from the University of Chicago and was a postdoctoral fellow at Stanford University. Prior to joining the faculty of Michigan State in 2019, he was professor of biochemistry and molecular biophysics and of microbiology at the University of Chicago.

His research primarily focuses on the physiology of Alphaproteobacteria, including mammalian pathogens of the genus Brucella and the freshwater/soil bacterium Caulobacter crescentus. He also collaborates with clinicians and ecologists on studies of Bacteroides fragilis and other bacteria that reside in the human gut. This work is aimed at understanding the contribution of these microbes to inflammatory bowel diseases. 

Crosson is section Editor for Microbial Genetics at PLoS Genetics and serves on the editorial board and advisory board of the Journal of Bacteriology and Molecular Microbiology. He served on the ASM Council on Microbial Sciences from 2017-2021, was elected to the American Academy of Microbiology in 2017 and is currently an ASM Distinguished Lecturer.