Volume 26, Number 6—June 2020
Research
Invasive Group B Streptococcus Infections in Adults, England, 2015–2016
Simon M. Collin
, Nandini Shetty, and Theresa Lamagni
, Nandini Shetty, and Theresa Lamagni
Table 1
Numbers of patients and episodes of iGBS infection among adults in England, 2015–2016*
| Age, y |
No. iGBS episodes |
No. patients |
Male sex, no. (%) |
No. (%) patients with >2 iGBS episodes† |
No. (%) iGBS episodes per patient |
Annual iGBS incidence‡ |
||
|---|---|---|---|---|---|---|---|---|
| 1 |
2 |
>3 |
||||||
| 15–19 | 21 | 21 | 7 (33.3) | 0 (0.0) | 21 (100.0) | 0 | 0 | 0.33 |
| 20–29 | 241 | 230 | 27 (11.7) | 3 (1.3) | 227 (98.7) | 2 (0.9) | 1 (0.4) | 1.63 |
| 30–39 | 388 | 376 | 58 (15.4) | 2 (0.5) | 374 (99.5) | 2 (0.5) | 0 | 2.66 |
| 40–49 | 277 | 261 | 128 (49.0) | 3 (1.1) | 258 (98.9) | 2 (0.8) | 1 (0.4) | 1.87 |
| 50–59 | 363 | 334 | 205 (61.4) | 13 (3.9) | 321 (96.1) | 9 (2.7) | 4 (1.2) | 2.50 |
| 60–69 | 493 | 466 | 278 (59.7) | 11 (2.4) | 455 (97.6) | 8 (1.7) | 3 (0.6) | 4.13 |
| 70–79 | 565 | 533 | 304 (57.0) | 18 (3.4) | 515 (96.6) | 17 (3.2) | 1 (0.2) | 6.76 |
| >80 |
808 |
772 |
357 (46.2) |
22 (2.8) |
750 (97.2) |
18 (2.3) |
4 (0.5) |
15.1 |
| Total | 3,156 | 2,993 | 1,364 (45.6) | 72 (2.4) | 2,921 (97.6) | 58 (1.9) | 14 (0.5) | 3.48 |
*iGBS, invasive group B Streptococcus.
†Recurrent iGBS episodes detected during Jan 1, 2015–Dec 31, 2016 based on iGBS episodes for which patient’s NHS number was recorded in PHE laboratory surveillance system (3084/3156 episodes)
‡Per 100,000 population. Numerator = iGBS episodes/2; denominator = Office for National Statistics mid-2016 population estimates for England (http://www.ons.gov.uk/peoplepopulationandcommunity/populationandmigration/populationestimates/datasets/populationestimatesforukenglandandwalesscotlandandnorthernireland)
Page created: May 18, 2020
Page updated: May 18, 2020
Page reviewed: May 18, 2020
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