Zecchin, B., Goujgoulova, G., Monne, I., Salviato, A., Schivo, A., Slavcheva, I., Pastori, A., Brown, I., Lewis, N., Terregino, C., & Fusaro, A. (2021). Evolutionary Dynamics of H5 Highly Pathogenic Avian Influenza Viruses (Clade 2.3.4.4B) Circulating in Bulgaria in 2019-2021. Viruses, 13(10), https://doi.org/10.3390/v13102086