Fig. 7

Corynebacterium sequence similarity among ISS samples. a Top 20 most prevalent non-reference alleles (rows) at variant positions present in every ISS sample (columns). Alleles are sorted by the number of samples in which each allele is present. Color indicates the within-sample relative abundance of reads supporting the allele. b Clustering of C. ihumii ISS consensus sequences shows the PMA-treated ISS dust sample is distinct. Only positions mapped in all samples where the major allele’s read depth ≤90% were used to calculate Hamming distances