Table 1. Summary of unique SNPs, Indels detected by WGS among all the isolates (n = 39) and in the subset of recent isolates (n = 27, yr 2000).

	Totala	Codinga	nSb	Sb	Intergenica
Total SNPs	1,767	1,632	704	928	135
Recent SNPs	1,379	1,270	536	734	109
	Totala	Codinga			Intergenica
Total Indels	485	298			187
Recent Indels	372	231			141

^aUnique events are labeled as either coding or intergenic.

^bEvents within coding regions are further subdivided into nonsynonymous (nS) or synonymous (S) categories.