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Table 4 Regional distribution of B. pertussis in Alberta 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
Geographic region* Suspected Confirmed (%) No. of outbreaks* Suspected Confirmed (%) No. of outbreaks* Suspected Confirmed (%)
Region 11 1,480 96 (6.5) 1 389 44 (11.3) 3 3 0 (0.0)
Region 2 830 37 (4.5) 1 11 0 (0.0) 1 0 NA
Region 3 2,994 171 (5.7) 0 8 1 (12.5) 1 14 12 (85.7)
Region 4 3,027 209 (6.9) 5 849 93 (11.0) 3 19 1 (5.3)
Region 5 863 44 (5.1) 4 90 12 (13.3) 4 22 7 (31.8)
Region 6 6,820 418 (6.1) 1 17 2 (11.8) 5 21 4 (19.0)
Region 7 1,965 129 (6.6) 3 35 2 (5.7) 5 15 6 (40.0)
Region 8 2,172 148 (6.8) 4 181 24 (13.3) 2 17 4 (23.5)
Region 9 1,333 171 (12.8)1 2 18 13 (72.2) 0 13 4 (30.8)
  1. *Geographic comparison was not performed for community-based and facility-based outbreaks because outbreaks initiated in a specific region usually involved residents from multiple regions because of travel.
  2. 1p < 0.001, binary logistic regression using region 1 as the reference group.