AOAC Annual Meeting_AIMS

Norovirus

• Inconsistent Classification • Limited data mid 1990

• Divided into genogroups and genotypes based on partial RdRp sequences • Later classification based on 5’ end of VP1 region (capsid) • Region C

• 2013 NCWG (Norovirus Classification Working Group) • Proposed nomenclature change • GI, GII, GII, GIX– human • GII.11, GII.18, GII.19– swine • GIV.2– cats and dogs • VP1 complete AA sequence • Capsid region and ORF2

Cavicchio et al, 2022