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Table 1 Distribution of norovirus outbreaks by genogroups

From: Changes in norovirus genotype diversity in gastroenteritis outbreaks in Alberta, Canada: 2012–2018

Genogroup July 2012–June 2013 July 2013–June 2014 July 2014–June 2015 July 2015–June 2016 July 2016–June 2017 July 2017- Feb 2018 Total
GI 40 6 6 18 4 9 83
GII 103 96 85 60 35 61 440
Mixed GI and GII 5 1 1 0 0 0 7
TOTAL 148 103 92 78 39 70 530
GI sequenced (%) 34 (75.6) 5 (71.4) 5 (71.4) 17 (94.4) 1 (25) 8 (88.9) 70 (77.8)
GII sequenced (%) 100 (92.6) 87 (89.7) 77 (89.5) 55 (91.7) 33 (94.3) 60 (98.4) 412 (92.2)