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Coverage profile of SARS-CoV-2 BA.1 using V4 and V4.1 primers. Percentage of samples with >50× coverage at each nucleotide position for the assembly of 59 SARS-CoV-2 BA.1 samples with (a) V4 primers (in blue) or (b) V4.1 primers (in orange). The depth of each nucleotide position was generated using SAMtools on the primer-trimmed alignment files.
