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Genetic and antigenic characterization of H5, H6 and H9 avian influenza viruses circulating in live bird markets with intervention in the center part of Vietnam

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タイトル: Genetic and antigenic characterization of H5, H6 and H9 avian influenza viruses circulating in live bird markets with intervention in the center part of Vietnam
著者: Duc-Huy Chu 著作を一覧する
Okamatsu, Masatoshi 著作を一覧する
Matsuno, Keita 著作を一覧する
Hiono, Takahiro 著作を一覧する
Ogasawara, Kohei 著作を一覧する
Lam Thanh Nguyen 著作を一覧する
Long Van Nguyen 著作を一覧する
Tien Ngoc Nguyen 著作を一覧する
Thuy Thu Nguyen 著作を一覧する
Dong Van Pham 著作を一覧する
Dang Hoang Nguyen 著作を一覧する
Tho Dang Nguyen 著作を一覧する
Thanh Long To 著作を一覧する
Hung Van Nguyen 著作を一覧する
Kida, Hiroshi 著作を一覧する
Sakoda, Yoshihiro 著作を一覧する
キーワード: Avian influenza
Antigenic analysis
Phylogenetic analysis
Live bird market
Surveillance
発行日: 2016年 8月31日
出版者: Elsevier
誌名: Veterinary Microbiology
巻: 192
開始ページ: 194
終了ページ: 203
出版社 DOI: 10.1016/j.vetmic.2016.07.016
抄録: A total of 3,045 environmental samples and oropharyngeal and cloacal swabs from apparently healthy poultry have been collected at three live bird markets (LBMs) at which practices were applied to reduce avian influenza (AI) virus transmission (intervention LBMs) and six conventional LBMs (non-intervention LBMs) in Thua Thien Hue province in 2014 to evaluate the efficacy of the intervention LBMs. The 178 AI viruses, including H3 (19 viruses), H4 (2), H5 (8), H6 (30), H9 (114), and H11 (5), were isolated from domestic ducks, muscovy ducks, chickens, and the environment. The prevalence of AI viruses in intervention LBMs (6.1%; 95% CI: 5.0-7.5) was similar to that in non-intervention LBMs (5.6%; 95% CI: 4.5-6.8; x(2) = 0.532; df = 1; P = 0.53) in the study area. Eight H5N6 highly pathogenic avian influenza (HPAI) viruses were isolated from apparently healthy ducks, muscovy ducks, and an environmental sample in an intervention LBM. The hemagglutinin genes of the H5N6 HPAI viruses belonged to the genetic Glade 23.4.4, and the antigenicity of the H5N6 HPAI viruses differed from the H5N1 HPAI viruses previously circulating in Vietnam. Phylogenetic and antigenic analyses of the H6 and H9 viruses isolated in both types of LBMs revealed that they were closely related to the viruses isolated from domestic birds in China, Group II of H6 viruses and Y280 lineage of H9 viruses. These results indicate that the interventions currently applied in LBMs are insufficient to control AI. A risk analysis should be conducted to identify the key factors contributing to Al virus prevalence in intervention LBMs. (C) 2016 Elsevier B.V. All rights reserved.
Rights: ©2016, Elsevier. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
資料タイプ: article (author version)
URI: http://hdl.handle.net/2115/67102
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: 迫田 義博

 

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