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      Recent outbreaks of highly pathogenic avian influenza viruses in South Korea

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          Abstract

          Outbreaks of H5 highly pathogenic avian influenza viruses (HPAIVs) have caused economic loss for the poultry industry and posed a threat to public health. In South Korea, novel reassortants of HPAIVs such as H5N6 and H5N8 had been circulating in poultry. Here, we will discuss the identity of recent novel reassortants of Korean H5 HPAIVs and the recent advances in vaccine development, which will be useful for controlling HPAIV transmission in poultry and for effectively preventing future epidemics and pandemics.

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          Most cited references69

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          Human Infection with a Novel Avian-Origin Influenza A (H7N9) Virus

          New England Journal of Medicine, 368(20), 1888-1897
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            Influenza A viruses: new research developments.

            Influenza A viruses are zoonotic pathogens that continuously circulate and change in several animal hosts, including birds, pigs, horses and humans. The emergence of novel virus strains that are capable of causing human epidemics or pandemics is a serious possibility. Here, we discuss the value of surveillance and characterization of naturally occurring influenza viruses, and review the impact that new developments in the laboratory have had on our understanding of the host tropism and virulence of viruses. We also revise the lessons that have been learnt from the pandemic viruses of the past 100 years.
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              Role for migratory wild birds in the global spread of avian influenza H5N8.

              (2016)
              Avian influenza viruses affect both poultry production and public health. A subtype H5N8 (clade 2.3.4.4) virus, following an outbreak in poultry in South Korea in January 2014, rapidly spread worldwide in 2014-2015. Our analysis of H5N8 viral sequences, epidemiological investigations, waterfowl migration, and poultry trade showed that long-distance migratory birds can play a major role in the global spread of avian influenza viruses. Further, we found that the hemagglutinin of clade 2.3.4.4 virus was remarkably promiscuous, creating reassortants with multiple neuraminidase subtypes. Improving our understanding of the circumpolar circulation of avian influenza viruses in migratory waterfowl will help to provide early warning of threats from avian influenza to poultry, and potentially human, health.
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                Author and article information

                Journal
                Clin Exp Vaccine Res
                Clin Exp Vaccine Res
                CEVR
                Clinical and Experimental Vaccine Research
                The Korean Vaccine Society
                2287-3651
                2287-366X
                July 2017
                26 July 2017
                : 6
                : 2
                : 95-103
                Affiliations
                [1 ]Infectious Disease Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Korea.
                [2 ]University of Science and Technology (UST), Daejeon, Korea.
                Author notes
                Corresponding author: Sun-Woo Yoon, PhD. Infectious Disease Research Center, Korea Research Institute of Bioscience and Biotechnology, 125 Gwahak-ro, Yuseong-gu, Deajeon 34141, Korea. Tel: +82-42-879-8278, Fax: +82-42-879-8498, syoon@ 123456kribb.re.kr

                *These authors contributed equally to this work.

                Author information
                https://orcid.org/0000-0003-3458-3403
                https://orcid.org/0000-0002-0764-1404
                https://orcid.org/0000-0003-2061-9743
                Article
                10.7774/cevr.2017.6.2.95
                5540969
                d9168e76-1e48-4bbd-ac3e-02e8c3e0b4be
                © Korean Vaccine Society.

                This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                : 30 May 2017
                : 07 June 2017
                : 11 June 2017
                Funding
                Funded by: Ministry of Science, ICT and Future Planning, CrossRef http://dx.doi.org/10.13039/501100003621;
                Award ID: H-GUARD 2013M3A6B2078954
                Funded by: Ministry of Agriculture, Food and Rural Affairs, CrossRef http://dx.doi.org/10.13039/501100003624;
                Award ID: 116101-03
                Funded by: Ministry of Environment, CrossRef http://dx.doi.org/10.13039/501100003562;
                Award ID: 2016000210002
                Categories
                Review Article

                avian influenza,h5n1 subtype,h5n6 subtype,h5n8 subtype,epidemiology,vaccines

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