Table 3. Estimation of invasive potential of Group B streptococcus (GBS) serotypes in different countries.
| Serotype | Country | |||||
| South Africa | Portugal [34] | Israel [36] | Sweden [31] | Netherlands [37] | Taiwan [37] | |
| Ia | 163a/31b(0.49; 0.31–0.77)c | 42/13(1.52; 0.63–3.67) | 12/10(1.14; 0.41–3.18) | 15/20(1.37; 0.61–3.10) | 24/6(0.52; 0.63–3.67) | 13/5(0.22; 0.07–0.70) |
| Ib | 36/7(0.50; 0.22–1.18) | 14/1(0.35; 0.04–2.93) | 9/2(0.30; 0.05–1.57) | 15/2(0.14 0.03–0.64) | ND | 5/2(0.22; 0.04–1.27) |
| II | 61/7(0.30 0.13–0.67) | 46/8(0.85; 0.32–2.27) | 23/14(0.83; 0.34–2.03) | 13/4(0.32; 0.09–1.07) | ND | ND |
| III | 202/78(1.00) | 59/12(1.00) | 26/191.00 | 36/35(1.00) | 20/33(1.00) | 19/34(1.00) |
| IV | (20/5)(0.65; 0.23–1.79) | 6/1(0.81; 0.09–7.44) | ND | 3/2(0.69; 0.11–4.36) | ND | ND |
| V | 55/8(0.38; 0.17–0.83) | 59/7(0.58; 0.21–1.59) | 18/9(0.68; 0.25–1.85) | 25/7(0.29; 0.11–0.75) | 14/4(0.17; 0.05–0.60) | 15/2(0.07; 0.02–0.36) |
In our data two isolates of the same serotype (i.e III) were obtained from the same infant, and only one isolate was included in the analysis.
a
Value indicates colonizing isolates.
b
Value indicates neonatal invasive isolates.
c
Value in parenthesis indicates OR and 95% CI.
d
ND: No data for either invasive, colonization or both isolates.