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. 2016 Nov 18;13(4):867–876. doi: 10.1080/21645515.2016.1251537

Table 1.

FluWatch surveillance system reports of influenza B strains in Canada during influenza seasons from 1999 to 2012.

  Influenza season starting:
  1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010* 2011* 2012*
Total cases of influenza B 43 254 152 128 40 214 472 119 673 570 7 586 965 602
B/Victoria (Yamanashi-like) 100%
B/Victoria (Beijing-like) 100%
B/Yamagata (Sichuan-like) 3% 83%
B/Victoria (Hong Kong-like) 97% 100% 18% 21% 29%
B/Yamagata (Shanghai-like) 79% 1% 90%
B/Victoria (Malaysia-like) 70% 10% 3% 66% 14%
B/Yamagata (Florida-like) 97% 2% 14%
B/Victoria (Brisbane-like) 32% 71% 95% 48% 23%
B/Yamagata (Wisconsin-like) 5% 53% 77%

Note: Data obtained from The Canadian FluWatch surveillance system.11-22

There was 1 case of B/Beijing-like influenza in 2000/01 (0.4% of cases). Data not shown due to rounding.

*

Data obtained from FluWatch final cumulative weekly report in absence of a full annual report.20-22