scholarly journals Ecology of H3 avian influenza viruses in Korea and assessment of their pathogenic potentials

2008 ◽  
Vol 89 (4) ◽  
pp. 949-957 ◽  
Author(s):  
Min-Suk Song ◽  
Taek-Kyu Oh ◽  
Ho Jin Moon ◽  
Dai-Woon Yoo ◽  
Eun Ho Lee ◽  
...  
Keyword(s):  
Avian Influenza ◽  
Wild Bird ◽  
Migratory Birds ◽  
Influenza Viruses ◽  
Interspecies Transmission ◽  
Avian Influenza Viruses ◽  
Backyard Poultry ◽  
Live Poultry ◽  
Live Poultry Markets

To determine the genetic origins of novel H3 avian influenza viruses of chickens and ducks in Korea, genetic characterization of H3 avian influenza viruses isolated from live poultry markets and migratory aquatic birds in South Korea during 2004–2006 was conducted. Phylogenetic analysis revealed that at least four novel genotypes of H3N2 and two genotypes of H3N6 avian influenza viruses were co-circulating in backyard poultry of Korea. The viruses were reassortants between H9N2 viruses of Korean chickens and unknown influenza viruses of migratory birds. Genetic comparison of H3 viruses from live bird markets with those from wild bird isolates revealed that certain gene segments of wild bird isolates are related closely to those of Korean group H9N2 viruses isolated from live poultry markets in 2003. Furthermore, animal-challenge studies demonstrated that the pathogenicity of certain avian H3 influenza viruses was altered due to reassortment, leading to H3 avian influenza viruses in Korea that can potentially expand their host range to include mammals. These studies emphasize the continuing need to monitor backyard poultry at live poultry markets to better understand interspecies transmission and the emergence of novel influenza viruses that have the potential to infect humans.

scholarly journals Characterizations of H4 avian influenza viruses isolated from ducks in live poultry markets and farm in Shanghai

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Ying Shi ◽  
Hongrui Cui ◽  
Junheng Wang ◽  
Qiuyan Chi ◽  
Xuesong Li ◽  
...  
Keyword(s):  
Avian Influenza ◽  
Influenza Viruses ◽  
Avian Influenza Viruses ◽  
Live Poultry ◽  
Live Poultry Markets

scholarly journals Diversity and evolution of avian influenza viruses in live poultry markets, free-range poultry and wild wetland birds in China

2016 ◽  
Vol 97 (4) ◽  
pp. 844-854 ◽  
Author(s):  
Liang-Jun Chen ◽  
Xian-Dan Lin ◽  
Wen-Ping Guo ◽  
Jun-Hua Tian ◽  
Wen Wang ◽  
...  
Keyword(s):  
Avian Influenza ◽  
Influenza Viruses ◽  
Avian Influenza Viruses ◽  
Wetland Birds ◽  
Free Range ◽  
Live Poultry ◽  
Live Poultry Markets

scholarly journals Genetic Characterization of Novel H7Nx Low Pathogenic Avian Influenza Viruses from Wild Birds in South Korea during the Winter of 2020–2021

Viruses ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 2274
Author(s):  
Yu-Na Lee ◽  
Dong-Hun Lee ◽  
Jung-Hoon Kwon ◽  
Jae-In Shin ◽  
Seo Yun Hong ◽  
...  
Keyword(s):  
Avian Influenza ◽  
South Korea ◽  
Migratory Birds ◽  
Wild Birds ◽  
Influenza Viruses ◽  
The Novel ◽  
Zoonotic Infection ◽  
Avian Influenza Viruses ◽  
Constellation Analysis

Zoonotic infection with avian influenza viruses (AIVs) of subtype H7, such as H7N9 and H7N4, has raised concerns worldwide. During the winter of 2020–2021, five novel H7 low pathogenic AIVs (LPAIVs) containing different neuraminidase (NA) subtypes, including two H7N3, an H7N8, and two H7N9, were detected in wild bird feces in South Korea. Complete genome sequencing and phylogenetic analysis showed that the novel H7Nx AIVs were reassortants containing two gene segments (hemagglutinin (HA) and matrix) that were related to the zoonotic Jiangsu–Cambodian H7 viruses causing zoonotic infection and six gene segments originating from LPAIVs circulating in migratory birds in Eurasia. A genomic constellation analysis demonstrated that all H7 isolates contained a mix of gene segments from different viruses, indicating that multiple reassortment occurred. The well-known mammalian adaptive substitution (E627K and D701N) in PB2 was not detected in any of these isolates. The detection of multiple reassortant H7Nx AIVs in wild birds highlights the need for intensive surveillance in both wild birds and poultry in Eurasia.

scholarly journals Genetic characterization and pathogenic potential of H10 avian influenza viruses isolated from live poultry markets in Bangladesh

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Rabeh El-Shesheny ◽  
John Franks ◽  
Bindumadhav M. Marathe ◽  
M. Kamrul Hasan ◽  
Mohammed M. Feeroz ◽  
...  
Keyword(s):  
Avian Influenza ◽  
Genetic Characterization ◽  
Influenza Viruses ◽  
Avian Influenza Viruses ◽  
Pathogenic Potential ◽  
Live Poultry ◽  
Live Poultry Markets

scholarly journals Isolation and Characterization of H4N6 Avian Influenza Viruses from Pigs with Pneumonia in Canada

2000 ◽  
Vol 74 (19) ◽  
pp. 9322-9327 ◽  
Author(s):  
Alexander I. Karasin ◽  
Ian H. Brown ◽  
Suzanne Carman ◽  
Christopher W. Olsen
Keyword(s):  
Avian Influenza ◽  
Influenza A ◽  
Phylogenetic Analyses ◽  
Influenza Viruses ◽  
Interspecies Transmission ◽  
Influenza A Viruses ◽  
Avian Influenza Viruses ◽  
The North ◽  
Isolation And Characterization

ABSTRACT In October 1999, H4N6 influenza A viruses were isolated from pigs with pneumonia on a commercial swine farm in Canada. Phylogenetic analyses of the sequences of all eight viral RNA segments demonstrated that these are wholly avian influenza viruses of the North American lineage. To our knowledge, this is the first report of interspecies transmission of an avian H4 influenza virus to domestic pigs under natural conditions.

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