a, Percent of SDSI for SDSI 1–96 in patient samples. b, Log of the mean amplicon coverage for the same clinical samples run with and without an SDSI (n=14). A unique SDSI was used in each sample. The solid blue line represents SDSI+AmpSeq and the solid black line is ARTIC only with no SDSI. Blue and black shading around the solid lines represents the 95% confidence interval. There were no statistical differences (p-value > 0.05) in the mean amplicon coverage for each amplicon between the groups (two-tailed Mann Whitney t-test and multiple comparison two-stage step-up Benjamini, Krieger, and Yekutieli test with FDR set to 5%). c, SNV concordance plot between SDSI+AmpSeq and unbiased consensus sequences. Two discordant SNVs, outlined in a red box, were found. Blue dots represent SNVs found in both the unbiased and SDSI+AmpSeq method, whereas black dots indicate the SNV was only present in unbiased.