Table 3.

Prevalence of genetic markers

PPI	Gene/marker	D N Ia % (n = 44)	D Cb % (n = 92)	T N Ic % (n = 43)	T A Id % (n = 101)	T Ce % (n = 58)	P-valuef D N I vs. D C	P-valuef T N I vs. T C	P-valuef T A I	P-valuef D C vs. T C
I	gbs0217/sag0224	38,6	41.3	32.6	33	27.6	0.767	0.589	0.504	0.088
	gbs 0227/sag0234	43.2	72.8	32.6	82	75.9	0.001g	<0.001h	0.339	0.680
III, VII, VIII (pNEM316)	gbs0367	2.3	3.3	0	2	6.9	1.000	0.134	0.192	nd
	gbs0388	0	3.3	4.7	1	1.7	0.551	0.573	1.000	nd
VI	gbs628/sag0645	56.8	68.5	65.1	67	56.9	0.183	0.404	0.188	0.150
	gbs0660/sag0685	81.8	92.4	79.1	82	84.5	0.082	0.482	0.709	0.126
IX	gbs1073/sag1038	38.6	4.3	69.8	78	79.3	< 0.0001i	0.272	0.872	<0.0001j
X	gbs1120	2.3	2.2	4.7	1	1.7	1.00	0.573	1.000	nd
	gbs1125	4.5	15.2	9.3	4	8.6	0.071	1.000	0.288	0.237
	gbs1135	11.4	15.2	4.7	5	17.2	0.544	0.053	0.013k	0.742
XII	gbs1306/sag1233	93.2	95.7	74.4	71	84.5	0.681	0.209	0.06	0.018l
	gbs1313/sag1246	18.2	77.2	86.0	78	82.5	<0.0001g	0.655	0.492	`0.411
XIII	gbs1987/sag2029	77.3	92.4	7.4	84	84.5	0.013g	0.209	0.957	0.126
Tn916	sag915	38.6	55.4	65.1	59	43.1	0.067	0.028m	0.047n	0.141

^aDutch neonatal invasive strains

^bDutch colonizing strains

^cTaiwanese neonatal invasive strains

^dTaiwanese adult invasive strains

^eTaiwanese colonizing strains

^fP-values are calculated for the differences in the prevalence of genetic markers between groups. If the P-value is <0.05, the difference is considered to be significant. Groups of invasive strains are compared with colonizing strains from the same region

^gLess prevalent in Dutch neonatal invasive strains

^hLess prevalent in Taiwanese neonatal invasive strains

ⁱMore prevalent in Dutch neonatal invasive strains

^jMore prevalent in Taiwanese colonizing strains

^kLess prevalent in Taiwanese adult invasive strains

^lMore prevalent in Dutch colonizing strains

^mMore prevalent in Taiwanese neonatal invasive strains

ⁿMore prevalent in adult invasive strains