PMC

Genotype profiles. Foodborne proportion per genotype group per year, as reported to Foodborne Viruses in Europe/Noronet, with polymerase genotypes (n = 4,580) or, if missing, capsid genotypes (n = 1,003).

Countries from which norovirus outbreak reports were included in analyses of norovirus genotype profiles associated with foodborne transmission, according to Foodborne Viruses in Europe/ Noronet (1999�?"2012), CaliciNet (2009�?"2012), ESR-EpiSurv (2008�?"2012), or systematic literature review (1993�?"2011). ESR, Institute of Environmental Science and Research.

Norovirus data for which the genotyped region and transmission mode were reported in different surveillance systems (FBVE/Noronet, 5,583 outbreaks in 22 countries (1999�?"2012); CaliciNet, 3,094 outbreaks in 1 country (2009�?"2012); ESR-EpiSurv, 818 outbreaks in 1 country (2008�?"2012); and systematic literature review, 808 outbreaks in 61 countries (1993�?"2011). ESR, Institute of Environmental Science and Research; FBVE, Foodborne Viruses in Europe.