Fig. 2. : phylogenetic analyses of norovirus GII sequences obtained from children with diarrhoea from Manaus, Brazil, between January 2010 and December 2011, based on a 253 bp region within the capsid. (A) Phylogenetic tree of norovirus GII genotypes; (B) phylogenetic tree of GII.4 variants. References strains of NoV genotypes are named according to GenBank with their respective accession numbers. Brazilian strains are marked with a filled diamond. The scale bar at the bottom of the tree indicates distance. Bootstrap values (2000 replicates) are shown at the branch nodes and values lower than 60% are not shown. The codes representing the positive samples are in bold and are organised as follows: study area (Amazonas)/sample code/country of collection (Brazil)/month-year of collection.
