AUTHOR=Cain Amy K. , Nolan Laura M. , Cornick Jennifer , Hassan Karl A. TITLE=Editorial: Secondary Effects of Antibiotic Exposure JOURNAL=Frontiers in Microbiology VOLUME=12 YEAR=2021 URL=https://www.frontiersin.org/journals/microbiology/articles/10.3389/fmicb.2021.737958 DOI=10.3389/fmicb.2021.737958 ISSN=1664-302X