Table 2 Gender and age distribution of B. pertussis in sporadic, community-based and facility-based outbreak settings
From: Bordetella pertussisin sporadic and outbreak settings in Alberta, Canada, July 2004 – December 2012
Sporadic cases | Community-based outbreaks | Facility-based outbreaks | ||||
|---|---|---|---|---|---|---|
Gender ratio | Suspected | Confirmed | Suspected | Confirmed | Suspected | Confirmed |
Male: Female* | 1:1.1 | 1:1.2 | 1:1.3 | 1:1.0 | 1:1.4 | 1:1.1 |
Age category | Suspected | Confirmed (%) | Suspected | Confirmed (%) | Suspected | Confirmed (%) |
≤8 weeks1 | 1,024 | 55 (5.4) | 8 | 0 (0.0) | 0 | NA |
>8 weeks - <6 months | 1,522 | 107 (7.0) | 43 | 6 (14.0) | 3 | 0 (0.0) |
6 months - <18 months | 2,414 | 108 (4.5) | 105 | 15 (14.3) | 7 | 2 (28.6) |
18 months – <5 years | 3,533 | 177 (5.0) | 246 | 22 (8.9) | 26 | 10 (38.5) |
5 - <10 years | 2,739 | 169 (6.2) | 273 | 41 (15.0) | 13 | 4 (30.8) |
10 - <15 years | 2,158 | 319 (14.8)1 | 311 | 61 (19.6) | 22 | 15 (68.2) |
15 - <20 years | 1,339 | 126 (9.4)1 | 224 | 29 (12.9) | 12 | 2 (16.7) |
20 - <40 years | 3,412 | 197 (5.8) | 205 | 8 (3.9) | 30 | 5 (16.7) |
40 - <60 years | 2,506 | 137 (5.5) | 142 | 9 (6.3) | 3 | 0 (0.0) |
60 years and older | 773 | 26 (3.4) | 38 | 0 (0.0) | 8 | 0 (0.0) |
Unknown | 64 | 2 (3.1) | 3 | 0 (0.0) | 0 | NA |