Fig. 3
From: Variation of human norovirus GII genotypes detected in Ibaraki, Japan, during 2012–2018
Distributions of the pairwise distance values of partial VP1 gene of NoV detected in Ibaraki Prefecture. a GI was analyzed for a total of 42 strains. b GII.2 was analyzed for a total of 48 strains. c GII.4 was analyzed for a total of 92 strains. d GII.6 was analyzed for a total of 22 strains. e GII.17 was analyzed for a total of 23 strains. The vertical axis shows the number of sequence pairs, and the horizontal axis shows the pairwise distance. Blue indicates different clusters, and gray indicates the same cluster