2444-6483 2444-6483 S2444-64832021000500066 10.24875/end.m21000349 México 00 00 2021 00 00 2021 33 66 67 1 Coronaviridae Study Group of the International Committee on Taxonomy of Viruses 2020 5 536-44 2 2020 158 1831-3 3 2021 93 6 Suppl 6 Suppl S426-7 4 2021 Sa111 5 2021 160 6 6 S-216 6 2020 69 1925-7 7 2021 8 e000558