Genetic Analysis of Norovirus GII.4 Variant Strains Detected in Outbreaks of Gastroenteritis in Yokohama, Japan, from the 2006-2007 to the 2013-2014 Seasons
Fig 2
Phylogenetic tree based on the VP1 amino acid sequences of NoV GII.4 strains.
A phylogenetic tree based on the VP1 amino acid sequences of NoV GII.4 strains. The tree was constructed with the neighbor-joining method using MEGA 5 software (http://www.megasoftware.net/) with 1,000 bootstrap replicates. The percentage of bootstrap support is indicated at each node (values < 70% are omitted). The scale bar represents the number of substitutions per site. Filled squares indicate strains of which the genes were analyzed in this study.
