Identification of amino acid residues in polymerase PB2 responsible for differential replication and pathogenicity of avian influenza virus H5N1 isolated from human and cattle in Texas, US. - Bayoumi M; Barre RS; Escobedo RA; Shivanna V; Jackson N; Ye C; García-Sastre A; Mostafa A; Martinez-Sobrido L (Emerging microbes & infections, 2025)