Deborah Carter Abigail Blake-Bradshaw Nicholas M. Masto Cory Highway Jamie Feddersen Richard J. Webby Bradley S. Cohen Jeffery D. Sullivan Rebecca L. Poulson David Stallknect 2024 <p><span>Testing of ducks in Tennessee, United States, before introduction of highly pathogenic influenza A(H5N1) virus demonstrated a high prevalence of antibodies to influenza A virus but very low prevalence of antibodies to H5 (25%) or H5 and N1 (13%) subtypes. Antibody prevalence increased after H5N1 introduction.</span></p> application/pdf 10.3201/eid3012.241126 en Centers for Disease Control and Prevention Influenza A virus antibodies in ducks and introduction of highly pathogenic influenza A(H5N1) virus, Tennessee, USA article