Figure 3.
Phylogenetic tree of an ORF1 fragment of norovirus GII.4 strains
DNA (dist) Kimura phylogenetic tree of a 440 bp norovirus ORF1 fragment of norovirus GII.4 strains corresponding to positions 4,484–4,923 of reference strain GII.4_Sydney_2012 (JX459908). Yellow highlights the branch containing the original strain GII.4_NewOrleans_2009 (GU445325) as well as representative specimens of that genotype from 2012 and 2013. Blue highlights the branch containing the recombinant GII.P4_NewOrleans_2009/GII.4_Sydney_2012 with specimens from 2015 and 2016. Red highlights the branch containing the proposed new variant that has altered slightly and is branching away from the recombinant form. The figures on the branches represent bootstrap values (%) after resampling 1,000 datasets. Only bootstrap values ≥ 70% are shown. The scale marker represents substitutions per site.
