is a Professor and Chairman of the Department of Molecular Virology and Microbiology and Chief Scientific Innovation Officer at Baylor College of Medicine.  Dr. Petrosino is also the Director of the Alkek Center for Metagenomics and Microbiome Research.  He holds a joint appointment in the Baylor College of Medicine Human Genome Sequencing Center.  Dr. Petrosino was the Founder and original Chief Scientific Officer of Diversigen, Inc., now a subsidiary of Orasure Technologies.  He is recognized internationally as an expert on the human microbiome and its role in health and disease.