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. 2007 Apr;13(4):601–604. doi: 10.3201/eid1304.061473

Table 2. Average pairwise percent nucleotide divergence between groups by year.

Group ISR 1998 WN NY99 2002 2003 2004 2005 2006
ISR 1998
WN NY99
 0.20
2002
 0.29
 0.29
2003
 0.36
 0.36
 0.15
2004
 0.46
 0.46
 0.24
 0.32
2005
 0.45
 0.45
 0.24
 0.31
 0.41
2006 0.60 0.60 0.38 0.46 0.56 0.48