Human Infection with Highly Pathogenic A(H7N7) Avian Influenza Virus, Italy, 2013
, Giada Rossini, Marzia Facchini, Gabriele Vaccari, Livia Di Trani, Angela Di Martino, Paolo Gaibani, Caterina Vocale, Giovanni Cattoli, Michael Bennett, John W. McCauley, Giovanni Rezza, Maria Luisa Moro, Roberto Rangoni, Alba Carola Finarelli, Maria Paola Landini, Maria Rita Castrucci, Isabella Donatelli, and the Influenza Task Force
Author affiliations: Istituto Superiore di Sanità, Rome, Italy (S. Puzelli, M. Facchini, G. Vaccari, L. Di Trani, A. Di Martino, G. Rezza, M.R. Castrucci, I. Donatelli); St. Orsola University Hospital, Bologna, Italy (G. Rossini, P. Gaibani, C. Vocale, M.P. Landini); Istituto Zooprofilattico delle Venezie, Padua, Italy (G. Cattoli); Medical Research Council National Institute for Medical Research, London, UK (M. Bennett, J.W. McCauley); Emilia-Romagna Region, Bologna (M.L. Moro, R. Rangoni, A.C. Finarelli)
Figure 1. Phylogenetic analysis of the hemagglutinin gene of the influenza A(H7N7) virus, Italy, isolated from humans during August–September 2013. The phylogenetic tree was constructed by using the neighbor-joining method and MEGA 5 software (http://www.megasoftware.net) with 1,000 bootstrap replicates (bootstrap values >70% are shown next to nodes). The influenza A(H7N7) virus isolated from a human in 2013 is shown in boldface. Scale bar indicate nucleotide substitutions per site.
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