Table 3.
Distribution of norovirus genotypes detected by surveillance test during 2014–2016
| Month | No. of strains of norovirus GI and GII from Seoul in 2014–2016 | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GI | I&II | II.2 | II.3 | II.4 | II.5 | II.6 | II.8 | II.13 | II.14 | II.17 | II.21 | No. of NoVs | No. of tested | |
| January | 1 | – | – | 5 | 21 | – | 3 | – | 2 | – | 9 | – | 41 | 166 |
| February | 3 | 2 | – | – | 12 | – | – | 1 | 3 | – | 7 | 1 | 29 | 129 |
| March | 2 | 1 | 1 | 1 | 19 | – | – | – | 2 | – | 7 | 3 | 36 | 146 |
| April | 2 | – | – | 1 | 1 | – | – | – | – | – | 1 | – | 14 | 115 |
| May | – | – | – | 7 | 16 | 1 | 3 | – | – | – | 2 | 1 | 30 | 135 |
| June | 1 | – | – | 2 | 11 | – | – | – | – | – | 1 | 1 | 16 | 160 |
| July | 1 | – | – | 2 | 9 | – | 1 | – | – | – | 4 | 1 | 18 | 168 |
| August | – | – | 1 | – | 5 | – | 1 | – | – | 1 | 2 | 3 | 13 | 193 |
| September | 1 | – | – | – | – | – | 2 | – | – | – | 1 | – | 4 | 128 |
| October | – | – | – | – | 2 | – | 2 | – | – | – | 2 | – | 6 | 97 |
| November | – | 1 | 1 | 5 | 11 | – | 2 | – | – | – | 3 | – | 23 | 113 |
| December | 1 | 2 | 1 | 4 | 22 | – | 1 | – | – | – | 1 | – | 41 | 109 |
| Total | 12 | 6 | 4 | 27 | 138 | 1 | 15 | 1 | 7 | 1 | 49 | 10 | 271 | 1659 |