Figure 6.

Phylogenetic tree of segment 5 sequences from selected ISAV isolates of European genotype. The analysis was performed using 625 nucleotides of the 5′ portion of the F gene (excluding the nucleotides responsible for the Q266L mutation). The phylogenetic tree was constructed by maximum likelihood (ML) using Tamura-Nei and Neighbor-joining [51]. All ISAV-HPR0 viruses are shown in blue and the ISAV-HPR∆ viruses (ISAV-HPR3 and ISAV-HPR14) associated with the 2013 ISA outbreaks in Chile are shown in red.