Analysis of signs and pathology of H5N1-infected ducks from the 2010–2011 Korean highly pathogenic avian influenza outbreak suggests the influence of age and management practices on severity of disease. - Rhyoo, Moon-Young; Lee, Kyung-Hyun; Moon, Oun-Kyung; Park, Woo-Hee; Bae, You-Chan; Jung, Ji-Youl; Yoon, Soon-Seek; Kim, Hye-Ryoung; Lee, Myoung-Heon; Lee, Eun-Joo; Ki, Mi-Ran; Jeong, Kyu-Shik (Avian Pathology, 2015)