Fig. 2: Time-scaled maximum clade credibility (MCC) tree of SARS-Cov2 sequences mapping with 4 amino acid changes (L452M, Y453F, F486L and N501T) of the spike protein.

The phylogeny is the same as Fig. 1c. Tips with specific amino acid changes are enlarged and in different colours; sequences isolated from mink and human are in triangle and circle, respectively. The 5 viral clusters are highlighted on the tree and labelled on the right.