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Table 3 Detected genotypes of GII in each situation

From: Variation of human norovirus GII genotypes detected in Ibaraki, Japan, during 2012–2018

Season 2012/2013 2013/2014 2014/2015 2015/2016 2016/2017 2017/2018 Total
GII 85 122 92 83 189 89 660
 C 46 67 25 36 135 52 361
 F 9 25 48 31 40 22 175
 E 20 20 11 12 4 8 75
 O 10 10 8 4 10 7 49
GII.2 9 1 1 7 152 27 197
 C 8 1   7 117 15 148
 F 1   1   28 10 40
 E       1 1
 O      7 1 8
GII.4 67 66 43 31 15 52 274
 C 31 21 10 9 7 33 111
 F 7 17 18 12 4 8 66
 E 20 20 9 8 3 7 67
 O 9 8 6 2 1 4 30
GII.6 4 49 3 2 4 0 62
 C 3 41 1 2 4   51
 F   6 2     8
 E        
 O 1 2      3
GII.17 1 1 29 33 11 7 82
 C    9 8 1 2 20
 F 1 1 17 19 7 3 48
 E    2 4 1   7
 O    1 2 2 2 7
Other GII 4 5 16 10 7 3 45
 C 4 4 5 10 6 2 31
 F   1 10   1 1 13
 E        
 O    1     1
  1. C childcare and educational facility, F food poisoning, E elderly nursing home, O others