Skip to main content

Table 1 Annual 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 outbreak

Facility-based outbreak

 

Suspected

Confirmed (%)

No. of outbreaks

Suspected

Confirmed (%)

No. of outbreaks

Suspected

Confirmed (%)

Complete period

21,484

1,423 (6.6)1

21

1,598

191 (12.0)1

24

124

38 (30.6)1

2004*

2,611

280 (10.7)

6

678

76 (11.2)

5

14

1 (7.1)

20052,3,4

4,175

304 (7.3)

3

79

12 (15.2)

4

42

20 (47.6)

2006

2,841

145 (5.1)2

2

220

17 (7.7)

1

1

0 (0.0)

2007

2,023

97 (4.8)2

1

6

6 (100.0)

2

11

0 (0.0)

2008

2,359

187 (7.9)

1

14

7 (50.0)3

5

32

3 (9.4)4

2009

1,905

116 (6.1)

3

319

44 (13.8)

3

4

0 (0.0)

2010

1,161

35 (3.0)2

0

0

NA

3

19

14 (73.7)

2011

1,157

47 (4.1)2

4

158

22 (13.9)

0

0

NA

2012

3,252

212 (6.5)

1

124

7 (5.6)

1

1

0 (0.0)

  1. *Only 6 months of data included for 2004 (July to December).
  2. 1p < 0.001, Chi-squared test excluding eight sporadic cases with indeterminate PCR results.
  3. 2p < 0.01, binary logistic regression with Bonferroni correction using 2005 as the reference year excluding 2004 (6 months only).
  4. 3p < 0.05, binary logistic regression with Bonferroni correction using 2005 as the reference year excluding 2004 (6 months only) and 2010 (no community-based outbreak).
  5. 4p < 0.05, binary logistic regression with Bonferroni correction using 2005 as the reference year excluding 2004 (6 months only) and 2011 (no facility-based outbreak).
Back to article page

BMC Infectious Diseases

ISSN: 1471-2334

Contact us