Fig. 2From: An outbreak of norovirus-related acute gastroenteritis associated with delivery food in Guangzhou, southern ChinaPhylogenetic tree of the nucleotide sequences of Noroviruses isolated from samples collected from patients, food handlers, and canteen environment. The phylogenetic tree was constructed using the neighbor-joining method, and the number at each branch point indicates the bootstrap value. Norovirus references selected from GenBank are indicated by accession numbersBack to article page