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Lori Holtz, MD, MSPH is an Assistant Professor of Pediatrics in the Division of Gastroenterology, Hepatology, and Nutrition at Washington University School of Medicine in St. Louis. Dr. Holtz earned a bachelor’s degree in Cell and Molecular Biology from Tulane University and a medical degree from The Ohio State University. She then completed a pediatric residency at Vanderbilt Children’s Hospital and a pediatric gastroenterology fellowship at Washington University in St. Louis. She has also received a Masters of Science of Public Health degree from St. Louis University. Her clinical focus is on celiac disease.

Dr. Holtz’ scientific interests lie at the intersection of metagenomics, epidemiology, gut microbes (especially viruses), gastroenterology, and global child health. Her research focuses on defining the community of viruses (virome) of stool in health and disease particularly in the developing childhood gut. Using these methods, she has discovered (or co-discovered) multiple novel viruses in human samples and determined that they are globally present and prevalent. Most recently she has focused on defining the developing infant virome and demonstrated for the first time its dynamic nature.

View Dr. Holtz's articles in PubMed