Figure 7.

Matrix of common SNVs found in iSNVs, and pairwise comparisons of all H7N3 viruses sequenced from the 2020 US outbreak. The iSNVs identified in samples from experimentally infected turkeys and chickens were compared against the single nucleotide changes that were found in all possible pairwise comparisons among all twenty-nine virus isolates during the 2020 US H7N3 outbreak [30]. On the left of the matrix, the nucleotide position of the iSNV in the corresponding segment is flanked by two letters that show the nucleotide substitution from left to right. Squares in red or blue indicate the presence of the corresponding iSNV to the left of the matrix. Red squares represent nonsynonymous iSNVs, whereas blue squares represent synonymous iSNVs. Outbreak sequences were also categorized according to the phylogenetic clusters A, A. HP, B, and C identified previously [30].