Fig. 4

Phylogenetic analysis of GII.4 variants based on the partial nucleotide sequences of the viral polymerase (a: 2012) and capsid regions (b-g: 2012–2017). References NoV genotypes are labelled according to GenBank with their respective accession numbers. The trees were constructed in MEGA 6.0 through the maximum likelihood method using the Kimura 2-parameter model. The bootstrap values (1000 replicates) are indicated in the phylogenetic tree, and values less than 70% are not represented