, Tony M. Joannis†1
, Alice Fusaro*, Paola De Benedictis*, Lami H. Lombin†, Husseini Ularamu†, Anthony Egbuji†, Poman Solomon†, Tim U. Obi‡, Giovanni Cattoli*, and Ilaria Capua*
Author affiliations: *Viale dell’Università, Legnaro, Padova, Italy; †National Veterinary Research Institute, Plateau State, Vom, Nigeria; ‡University of Ibadan, Oya State, Ibadan, Nigeria
Figure 1. Phylogenetic tree for the hemagglutinin gene of influenza viruses constructed by neighbor-joining method. Sequences obtained in this study were labeled with a circle (EMA1/EMA2-2:6-R07 group) and triangle (EMA2 group). The remaining sequences can be found in GenBank. The numbers at each branch point represent bootstrap values, and they were determined by bootstrap analysis by using 1,000 replications. Scale bar = 0.01 nucleotide substitutions/site.