Fig. 4
From: Changes in norovirus genotype diversity in gastroenteritis outbreaks in Alberta, Canada: 2012–2018
Maximum likelihood phylogenies of norovirus GII.2 strains. GII.2 sequences at (a) the 3’end of ORF1 and (b) region C of the capsid gene were analyzed. The novel GII.P16/GII.2 recombinant sequences are shown with open circles; GII.Pe.GII.2 and GII.P2/GII.2 strains are shown, respectively, with open squares and open triangles. All trees were constructed using the Kimura-2 parameter substitution model assuming gamma-distributed rates of evolution among sites with (tree A) and without (tree B) invariant sites. Branch significance was estimated based on 1000 bootstrap replicates