AUTHOR=Shekhar Sudhanshu , Petersen Fernanda Cristina , Yang Xi TITLE=Editorial: Understanding and Exploiting Host-Commensal Interactions to Combat Pathogens JOURNAL=Frontiers in Immunology VOLUME=10 YEAR=2019 URL=https://www.frontiersin.org/journals/immunology/articles/10.3389/fimmu.2019.02645 DOI=10.3389/fimmu.2019.02645 ISSN=1664-3224