Cover photograph: The third E. coli and the Mucosal Immune System (ECMIS) symposium was held in Ghent, Belgium, from 2 to 5 June 2019. The meeting venue was the Convention Centre Het Pand, located on the banks of the river Leie. The upper image shows the Graslei, a medieval port along the river. The lower image shows enterohemorrhagic Escherichia coli binding to human colonic biopsy tissue (courtesy of Stephanie Schüller; reprinted with permission). (See related article at e02426-20.) (Copyright © 2020 American Society for Microbiology. All Rights Reserved.)