AUTHOR=Usmani Salman Sadullah , Raghava Gajendra P. S. TITLE=Potential Challenges for Coronavirus (SARS-CoV-2) Vaccines Under Trial JOURNAL=Frontiers in Immunology VOLUME=11 YEAR=2020 URL=https://www.frontiersin.org/journals/immunology/articles/10.3389/fimmu.2020.561851 DOI=10.3389/fimmu.2020.561851 ISSN=1664-3224