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(A) Cumulative number over time of African severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) sequences by lineage. (B) Frequencies over time of the key lineages identified in this study, along with the B.1.1.7 and B.1.351 variants of concern. Regarding the lineages in this study, we note that their impact in the pandemic is currently rather limited, due to the huge number of infections attributed to the B.1.351 lineage.
