Figure 3.

Temporal most recent common ancestor (TMRCA) phylogenetic analysis generated with BEAUTi and BEAST v1.10.4 under a strict molecular clock of 600 H9N2 influenza A viruses (IAVs) HA1 nucleotide sequences aligned in MUSCLE 3.8.425 (IRD and GISAID databases at August 2019). H9N2 clades are color coded, respectively: h9.1—North American, teal; h9.1.2—South American, purple; h9.2—Y439, blue; h9.2.2—Korean, pink; h9.3—BJ94, green; h9.4.1—G1-Eastern, red; h9.4.2—G1-Western, orange. Animal reservoir and countries with most common isolations for each lineage are shown.