Volume 22, Number 10—October 2016
Dispatch
Hypervirulent Clone of Group B Streptococcus Serotype III Sequence Type 283, Hong Kong, 1993–2012
Margaret Ip
, Irene Ang, Kitty Fung, Veranja Liyanapathirana, Ming Jing Luo, and Raymond Lai
, Irene Ang, Kitty Fung, Veranja Liyanapathirana, Ming Jing Luo, and Raymond Lai
Table 2
Distribution of GBS serotypes in patients with group B Streptococcus invasive disease, Hong Kong, 1993–2012*
| Serotype | Nonpregnant adults, n = 267 |
Neonates, n = 113 |
|||||
|---|---|---|---|---|---|---|---|
| No. (%) |
p value | No. (%) |
p value | ||||
| Meningitis† | Nonmeningitis‡ | Meningitis† | Nonmeningitis‡ | ||||
| Ia | 1 (3.0) | 32 (97.0) | 0.53 | 4 (21.1) | 15 (78.9) | 0.55 | |
| Ib | 1 (2.1) | 46 (97.9) | 0.28 | 2 (14.3) | 12 (85.7) | 0.27 | |
| II | 0 | 17 (100.0) | 0.31 | 0 | 4 (100.0) | 0.22 | |
| III-1 | 1 (3.6) | 27 (96.4) | 0.66 | 5 (26.3) | 14 (73.7) | 0.56 | |
| III-2 | 0 | 13 (100.0) | 0.38 | 16 (35.6) | 29 (64.4) | 0.08 | |
| III-3 | 0 | 3 (100.0) | 0.68 | 2 (66.7) | 1 (33.3) | 0.11 | |
| III-4 | 7 (15.9) | 37 (84.1) | <0.001 | 1 (20.0) | 4 (80.0) | 0.73 | |
| V | 2 (7.1) | 26 (92.9) | 0.64 | 0 | 3 (100.0) | 0.29 | |
| VI | 0 | 10 (100.0) | 0.44 | 0 | 1 (100.0) | 0.55 | |
| VII | 0 | 3 (100.0) | 0.68 | 0 | 0 | NA | |
| VIII | 0 | 0 | NA | 0 | 0 | NA | |
| IX | 0 | 0 | NA | 0 | 0 | NA | |
| NT | 0 | 1 (100.0) | 0.81 | 0 | 0 | NA | |
| Total |
12 (5.3) |
215 (94.7) |
NA |
30 (26.5) |
83 (74.3) |
NA |
|
| *GBS, group B Streptococcus; NT, nontypable. Bold indicates statistical significance; p values determined by Fisher exact or χ2 test. †Meningitis was confirmed by cerebrospinal fluid culture of GBS. ‡Nonmeningitis was confirmed by GBS culture from sterile body site or from cerebrospinal fluid. | |||||||
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Page updated: August 24, 2016
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