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Table 1 Number of specimens tested and influenza cases, and percentages attributable to influenza A and B virus types

From: Ten influenza seasons in France: distribution and timing of influenza A and B circulation, 2003–2013

Season

Specimens tested

Influenza cases

% positive

A

B

2003–2004

2,737

950

34.7 %

946 (99.6 %)

4 (0.4 %)

2004–2005

3,782

1,118

29.6 %

1,018 (91.1 %)

100 (8.9 %)

2005–2006

4,858

903

18.6 %

340 (37.7 %)

563 (62.3 %)

2006–2007

4,609

1,061

23.0 %

1,055 (99.4 %)

6 (0.6 %)

2007–2008

5,084

1,375

27.0 %

893 (64.9 %)

482 (35.1 %)

2008–2009

4,860

1,564

32.2 %

1,336 (85.4 %)

228 (14.6 %)

2009–2010

8,822

3,105

35.2 %

3,098 (99.8 %)

7 (0.2 %)

2010–2011

5,255

2,068

39.4 %

1,086 (52.5 %)

982 (47.5 %)

2011–2012

4,465

1,530

34.3 %

1,474 (96.3 %)

56 (3.7 %)

2012–2013

5,447

2,613

48.0 %

1,189 (45.5 %)

1,424 (54.5 %)

Total

49,919

16,287

32.6 %

12435 (76.3 %)

3852 (23.7 %)

  1. Source: GROG influenza sentinel surveillance network, France, 2003–2004 to 2012–2013