Quasispecies Diversity and Amino Acid Variation at the Fusion Protein Cleavage Site of Newcastle Disease Virus Isolated from Cormorants in Central Asia
Newcastle disease virus (NDV) remains a major threat to poultry production worldwide, and wild waterbirds are recognized as reservoirs of virulent strains. To characterize fine-scale quasispecies diversity at the virulence-determining fusion (F) protein cleavage site, amplicons encompassing the six-amino-acid motif wer...