Introduction into Nigeria of a Distinct Genotype of Avian Influenza Virus (H5N1)
Alice Fusaro, Tony Joannis, Isabella Monne, Annalisa Salviato, Bitrus Yakubu, Clement Meseko, Tinuke Oladokun, Sonia Fassina, Ilaria Capua, and Giovanni Cattoli
Author affiliations: Istituto Zooprofilattico Sperimentale delle Venezie, Padova, Italy (A. Fusaro, I. Monne, A. Salviato, S. Fassina, I. Capua, G. Cattoli); National Veterinary Research Institute, Vom, Nigeria (T. Joannis, B. Yakubu, C. Meseko, T. Oladokun)
Figure 2. Phylogenetic tree constructed by Bayesian analysis of the neuraminidase gene segment of representative influenza viruses A (H5N1) from Africa, Europe, and the Middle East. Taxon names of the Nigerian viruses isolated during 2006–2007 are marked in blue, 2008 isolate in red. Posterior probabilities of the clades are indicated above the nodes. Scale bar indicates number of nucleotide substitutions per site.
The opinions expressed by authors contributing to this journal do not necessarily reflect the opinions of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.