Figure 2

Phylogenetic analysis of Coxsackievirus A6 strains based on the partial VP1 gene sequence (nucleotide position 196-447) was performed using the isolates in 2010, 52 previous CA6 strains isolated in Taiwan from 1998 through 2009, along with 8 sequences obtained from Genbank (7 strains from Finland, and the prototype strain, Gdula). Clade I included the 52 strains isolated from 1998 through 2009 in Taiwan, while clade II included the 123 strains isolated in Taiwan in 2010 (the compressed subtree indicated by the bold triangle) and the 7 strains isolated in Finland in 2008.