Table 3. Classification of intra-strain SNPs.

SNP classification	Number of intra-strain SNPs
5′ UTR	35,812
3′ UTR	51,238
Coding region	486,104
synonymous	200,492
non-synonymous	285,612
pre-terminated	14,681
skip-stop-codon	9,664
mis-sense	261,267
Undefined	138,888
Total	712,042