Dr. Littman is a Howard Hughes Medical Institute Investigator and the Helen L. and Martin S. Kimmel Professor of Molecular Immunology and Professor of Pathology and Microbiology at the New York University (NYU) School of Medicine. Dr. Littman has made numerous groundbreaking discoveries in the field of virology and immunology, including identification and isolation of receptors required for human immunodeficiency virus (HIV) entry, molecular mechanisms of immune cells that mediate autoimmunity and the role of specific members of the gut microbiota in T-cell differentiation. Dr. Littman is a Fellow of the American Academy of Arts and Sciences and is a Member of the National Academy of Sciences. He was awarded the 2004 New York City Mayor's Award for Excellence in Science and Technology and the 2016 Vilcek Prize in Biomedical Science.