Antigenic and Molecular Characterization of Low Pathogenic Avian Influenza A(H9N2) Viruses in Sub-Saharan Africa from 2017 through 2019: Avian influenza H9N2 viruses in Sub-Saharan Africa

Sub-Saharan Africa was historically considered an animal influenza cold spot, with only sporadic highly pathogenic H5 outbreaks detected over the last 20 years. However, in 2017, low pathogenic avi...