Figure 1. Phylogenetic analyses of partial RdRP/VP1 genes in NoV strains associated with serial foodborne outbreaks in tourist groups.

Thirteen strains belonging to five genotypes including GI.3, GI.4, GII.4, GII.6 and GII.14 were detected in 22 specimens from Event A–G., which was associated with infections occurred at the restaurant. One GI.3 strain (labeled with black triangle) was detected in one restaurant employee. Local infections with 4 genotypes (labeled with diamond) such as GI.3, GI.5, GII.6 and GII.12 were identified in 3 patients.