#Genomic #signatures and #host #adaptation of #H5N1 clade 2.3.4.4b: A call for global #surveillance and multi-target antiviral strategies
Highlights • Phylogenetic analysis of genotype B3.13 and D1.1 across the species. • Mutations on the receptor binding sites related to receptor preferring. • Host adaptability differences between B3.13 and D1.1. • Antivirals resistance mutations emergence of genotype B3.13 and D1.1. Abstract The recent report of the first fatality associated with infection by influenza virus H5N1 clade 2.3.4.4b, identified as genotype D1.1, which is distinct from the B3.13 genotype, has sparked fears of a potential human pandemic . However, the genetic relationships between B3.13 and D1.1, as well as their origins, host adaptability, and antiviral resistance, remain poorly understood . Here we conducted a comprehensive phylogenetic and comparative analysis of H5N1 clade 2.3.4.4b across multiple species , in order to identify the molecular characteristics and frequency of resistance mutations in these two genotypes, elucidate their evolutionary trajectories , and assess their impl...