Fig. 3: Mutations defining the marine mammal clade of H5N1 HPAI (2.3.4.4b) viruses.

Amino acid changes are listed for new mutations that arose in the marine mammal clade of the H5N1 HPAI (2.3.4.4b) viruses that are not observed in any other avian viruses included in this study from South America, mapped against the subsection of the MCC tree with the marine mammal clade (see Fig. 2A). Virus names and associated mutations are colored by country. A question mark indicates that no sequence data is available at that position for that virus. HA mutations refer to H5 numbering.