AUTHOR=Schwartz David A. TITLE=Prioritizing the Continuing Global Challenges to Emerging and Reemerging Viral Infections JOURNAL=Frontiers in Virology VOLUME=1 YEAR=2021 URL=https://www.frontiersin.org/journals/virology/articles/10.3389/fviro.2021.701054 DOI=10.3389/fviro.2021.701054 ISSN=2673-818X