Table 1. Parameters of the analysis of a rapid population growth based on the complete G gene sequence data.

Clade and subset membership, as well as sampling period	Number of used sequences (n)	Nucleotide diversity (PI)	Tajima’s D	Fu’s Fs	Raggedness index (r)
5i (2000–2011)	152	0.00349	-2.36505**	-73.024	0.0051
5i Denmark (2000–2009)	137	0.00333	-2.16059*	-63.686	0.0057
9i (1999–2015)	213	0.00583	-2.48568***	-149.539	0.0030
9i Germany (2002–2015)	145	0.00584	-2.10903**	-72.958	0.0042
9i Italy (2002–2011)	13	0.00407	-1.25092°	-8.124	0.0155
9i Poland (2006–2009)	18	0.00354	-1.76634°°	-4.204	0.0120
9i Switzerland (1999–2012)	27	0.00609	-0.96486°	-2.551	0.0116

*P<0.05

**P<0.01

***P<0.001

°P>0.10 (not significant)

°°0.10>P>0.05 (not significant)