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Fig. 3 | BMC Infectious Diseases

Fig. 3

From: Influence of herd immunity on norovirus: a long-term field study of repeated viral gastroenteritis outbreaks at the same facilities

Fig. 3

Phylogenetic analysis of norovirus. Phylogenetic trees based on a the partial RdRp and b the VP1 nucleotide sequences. The tree was constructed with the neighbor-joining method using MEGA 6 software (http://www.megasoftware.net/) with 1,000 bootstrap replicates. The percentage of bootstrap support is indicated at each node (values < 95% are omitted). The scale bar represents the number of substitutions per site. Norovirus strains for which the genes were determined in this study are denoted in bold typeface. The y13-V1056-4 strain of the partial RdRp region was omitted because the determined length was too short to construct a phylogenetic tree

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