Backbone of the phylogenetic tree of R0 subclades. Mutations are transitions unless the base change is explicitly indicated. Deletions are indicated by a "d" following the deleted nucleotides. Underlining indicates recurrent mutations, whereas mutations in grey were added when observed with a high frequency in a certain branch. Mutations in grey boxes can be targeted with the SNP-multiplex published in .
Brandstätter et al. BMC Evolutionary Biology 2008 8:191 doi:10.1186/1471-2148-8-191