TY - JOUR AU - Jiang, Wenming AU - Hou, Guangyu AU - Li, Jinping AU - Peng, Cheng AU - Wang, Suchun AU - Liu, Shuo AU - Zhuang, Qingye AU - Yuan, Liping AU - Yu, Xiaohui AU - Li, Yang AU - Wang, Jingjing AU - Liu, Hualei T1 - Antigenic Variant of Highly Pathogenic Avian Influenza A(H7N9) Virus, China, 2019 T2 - Emerging Infectious Disease journal PY - 2020 VL - 26 IS - 2 SP - 379 SN - 1080-6059 AB - In China, influenza A(H7N9) virus appeared in 2013, then mutated into a highly pathogenic virus, causing outbreaks among poultry and cases in humans. Since September 2017, extensive use of the corresponding vaccine, H7-Re1, successfully reduced virus prevalence. However, in 2019, a novel antigenic variant emerged, posing considerable economic and public health threats. KW - Influenza virus KW - H7N9 KW - antigenicity KW - variant KW - influenza KW - viruses KW - highly pathogenic avian influenza KW - China KW - HPAI DO - 10.3201/eid2602.191105 UR - https://wwwnc.cdc.gov/eid/article/26/2/19-1105_article ER - End of Reference