Table 1.
Number of screened and the group B streptococcus (GBS) positive samples and the colonization rates measured in the different age groups during the examined period.
| Age Groups (Years Old) | <21 | 21–25 | 26–30 | 31–35 | 36–40 | 41–45 | >45 | Total | |
|---|---|---|---|---|---|---|---|---|---|
| Year | |||||||||
| 2012 | No. of screened samples | 4 | 73 | 468 | 1037 | 823 | 357 | 114 | 2876 |
| No. of GBS positive samples (colonization rate; %) |
0 (0) |
10 (13.7) |
80 (17.1) |
196 (18.9) |
150 (18.2) |
53 (14.8) |
17 (14.9) |
506 (17.6) |
|
| 2013 | No. of screened samples | 6 | 88 | 538 | 966 | 867 | 329 | 116 | 2910 |
| No. of GBS positive samples (colonization rate; %) |
1 (16.7) |
24 (27.3) |
96 (17.8) |
176 (18.2) |
142 (16.4) |
52 (15.8) |
17 (14.7) |
508 (17.5) |
|
| 2014 | No. of screened samples | 10 | 94 | 539 | 1015 | 890 | 344 | 115 | 3007 |
| No. of GBS positive samples (colonization rate; %) |
2 (20.0) |
15 (16.0) |
106 (19.7) |
212 (20.9) |
168 (18.9) |
69 (20.1) |
23 (20.0) |
595 (19.8) |
|
| 2015 | No. of screened samples | 3 | 103 | 557 | 992 | 884 | 352 | 89 | 2980 |
| No. of GBS positive samples (colonization rate; %) |
0 (0) |
16 (15.5) |
101 (18.1) |
198 (20.0) |
177 (20.0) |
67 (19.0) |
17 (19.1) |
576 (19.3) |
|
| 2016 | No. of screened samples | 9 | 92 | 568 | 1001 | 866 | 341 | 89 | 2966 |
| No. of GBS positive samples (colonization rate; %) |
2 (22.2) |
17 (18.5) |
123 (21.7) |
193 (19.3) |
160 (18.5) |
57 (16.7) |
18 (20.2) |
570 (19.2) |
|
| 2017 | No. of screened samples | 7 | 108 | 584 | 951 | 839 | 331 | 60 | 2880 |
| No. of GBS positive samples (colonization rate; %) |
1 (14.3) |
14 (13.0) |
111 (19.0) |
158 (16.6) |
147 (17.5) |
62 (18.7) |
9 (15.0) |
502 (17.4) |
|
| 2018 | No. of screened samples | 3 | 75 | 312 | 548 | 480 | 197 | 33 | 1648 |
| No. of GBS positive samples (colonization rate; %) |
0 (0) |
13 (17.3) |
59 (18.9) |
109 (19.9) |
85 (17.7) |
27 (13.7) |
4 (12.0) |
297 (18.0) |
|
| Total | No. of screened samples | 42 | 633 | 3566 | 6510 | 5649 | 2251 | 616 | 19267 |
| No. of GBS positive samples (colonization rate; %) |
6 (14.3) |
109 (17.2) |
676 (19.0) |
1242 (19.0) |
1029 (18.2) |
387 (17.2) |
105 (17.1) |
3554 (18.5) |
|