AUTHOR=Adachi Shun , Koma Takaaki , Doi Naoya , Nomaguchi Masako , Adachi Akio TITLE=Commentary: Origin and evolution of pathogenic coronaviruses JOURNAL=Frontiers in Immunology VOLUME=11 YEAR=2020 URL=https://www.frontiersin.org/journals/immunology/articles/10.3389/fimmu.2020.00811 DOI=10.3389/fimmu.2020.00811 ISSN=1664-3224