Polymerase trapping as the mechanism of H5 highly pathogenic avian influenza virus genesis. - Funk, Mathis; Spronken, Monique I.; Hutchinson, Roy M.; Arragain, Benoit; Juyoux, Pauline; Bestebroer, Theo M.; de Bruin, Anja C. M.; Gultyaev, Alexander P.; Fouchier, Ron A. M.; Cusack, Stephen; te Velthuis, Aartjan J. W.; Richard, Mathilde (Science, 2026)