A single amino acid at the hemagglutinin cleavage site contributes to the pathogenicity but not the transmission of Egyptian highly pathogenic H5N1 influenza virus in chickens.

Yoon SW, Kayali G, Ali MA, Webster RG, Webby RJ, Ducatez MF. A single amino acid at the hemagglutinin cleavage site contributes to the pathogenicity but not the transmission of Egyptian highly pathogenic H5N1 influenza virus in chickens. J Virol. 2013 Apr; 87(8):4786-8.

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