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Table 2 Distribution of Norovirus strains by ORF1 and ORF2 genotype combinations

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

ORF1/ORF2 genotypes 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 sequenced        
Pol NT/GI.1    1     1
GI.P1/GI.1       3 3
Pol NT/GI.2   2   1    3
GI.2/GI.P2      1   1
Pol NT/GI.3   1 1 15    17
GI.P3/GI.3       4 4
Pol NT/GI.4   1      1
Pol NT/GI.5    2     2
Pol NT/GI.6 20   1     21
GI.Pb/GI.6       1 1
Pol NT/GI.7 14    1    15
Pol NT/GI.9   1      1
GII sequenced        
Pol NT/GII.1     1    1
GII.P16/GII.2      13   13
GII.P2/GII.2 1    1    2
GII.Pe/GII.2     1    1
Pol NT/GII.3     1    1
GII.P12/GII.3      1 3 4
Pol NT/GII.4 Den Haag 2006b 4 1      5
Pol NT/GII.4 New Orleans 2009 5 7      12
GII.P4 New Orleans 2009/GII.4 New Orleans 2009 1 4      5
Pol NT/GII.4 Sydney 2012 86 54 51 9   4 204
GII.P16/GII.4 Sydney 2012     21 3 44 68
GII.P4 New Orleans 2009/GII.4 Sydney 2012      4   4
GII.Pe/GII.4 Sydney 2012   2 9 3 2 5 21
Pol NT/GII.5   7 1     8
Pol NT/GII.6 2 7 5 5    19
GII.P7/GII.6       3 3
Pol NT/GII.7 1   1 2    4
GII.P7/GII.7       1 1
Pol NT/GII.8   1 1 1    3
Pol NT/GII.13   4 4     8
Pol NT/GII.14    1     1
Pol NT/GII.16     1    1
Pol NT/GII.17    4 9 6   19
GII.P17/GII.17      4   4
  1. Pol NT = polymerase not typed