- Genotype nomenclatures were assigned as described previously by Graaf-Rau et al., 2023 [30]
- The color coding indicates phylogenetically distinct lineages for each segment. The origin of the internal gene segments PB2 to NS is assigned to avian (green color) or human pandemic 2009 (pdm, blue) origin. N2g indicates closest relationship with A/swine/Gent/1/1984-like sequences. White boxes indicate lack of full sequences, hampering a clear designation of the genotype.
