Highly pathogenic avian influenza virus H5N2 (Clade 2.3.4.4) challenge of mallards age appropriate to the 2015 midwestern poultry outbreak - Hall, Jeffrey; Grear, Daniel; Krauss, Scott; Seiler, Patrick; Dusek, Robert; Nashold, Sean; Webster, Robert G. (Influenza and Other Respiratory Viruses, 2021)