Fig. 1
From: Phylodynamics of avian influenza clade 2.2.1 H5N1 viruses in Egypt
Phylogenetic analysis of H5N1 in Egypt during the period 2006–2014. The original viruses of clade 2.2.1 are marked in blue, while the cluster 2.2.1.2 clade which originated from 2.2.1 are marked in green. The variant clade 2.2.1.1 is divided into two clusters (2.2.1.1) marked in red and (2.2.1.1a) marked in pink. The genetic diversity has been illustrated on an annual scale