Domestic ducks play a major role in the maintenance and spread of H5N8 highly pathogenic avian influenza viruses in South Korea

2019 ◽  
Vol 67 (2) ◽  
pp. 844-851 ◽  
Author(s):  
Jung‐Hoon Kwon ◽  
Justin Bahl ◽  
David E. Swayne ◽  
Yu‐Na Lee ◽  
Youn‐Jeong Lee ◽  
...  
Keyword(s):  
Avian Influenza ◽  
South Korea ◽  
Highly Pathogenic Avian Influenza ◽  
Influenza Viruses ◽  
Avian Influenza Viruses ◽  
Domestic Ducks ◽  
Highly Pathogenic ◽  
Pathogenic Avian Influenza

Pathogenicity of two Egyptian H5N1 highly pathogenic avian influenza viruses in domestic ducks

2010 ◽  
Vol 156 (1) ◽  
pp. 37-51 ◽  
Author(s):  
J. L. Wasilenko ◽  
A. M. Arafa ◽  
A. A. Selim ◽  
M. K. Hassan ◽  
M. M. Aly ◽  
...  
Keyword(s):  
Avian Influenza ◽  
Highly Pathogenic Avian Influenza ◽  
Influenza Viruses ◽  
Avian Influenza Viruses ◽  
Domestic Ducks ◽  
Highly Pathogenic ◽  
Pathogenic Avian Influenza

Multiple novel H5N6 highly pathogenic avian influenza viruses, South Korea, 2016

2017 ◽  
Vol 51 ◽  
pp. 21-23 ◽  
Author(s):  
Eun-Kyoung Lee ◽  
Byung-Min Song ◽  
Yu-Na Lee ◽  
Gyeong-Beom Heo ◽  
You-Chan Bae ◽  
...  
Keyword(s):  
Avian Influenza ◽  
South Korea ◽  
Highly Pathogenic Avian Influenza ◽  
Influenza Viruses ◽  
Avian Influenza Viruses ◽  
Highly Pathogenic ◽  
Pathogenic Avian Influenza

scholarly journals Multiple Reassortants of H5N8 Clade 2.3.4.4b Highly Pathogenic Avian Influenza Viruses Detected in South Korea during the Winter of 2020–2021

Viruses ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 490
Author(s):  
Yoon-Gi Baek ◽  
Yu-Na Lee ◽  
Dong-Hun Lee ◽  
Jae-in Shin ◽  
Ji-Ho Lee ◽  
...  
Keyword(s):  
Phylogenetic Analysis ◽  
Avian Influenza ◽  
South Korea ◽  
Highly Pathogenic Avian Influenza ◽  
Influenza Viruses ◽  
Domestic Duck ◽  
Avian Influenza Viruses ◽  
Highly Pathogenic ◽  
Pathogenic Avian Influenza ◽  
Genetic Clusters

During October 2020–January 2021, we isolated a total of 67 highly pathogenic avian influenza (HPAI) H5N8 viruses from wild birds and outbreaks in poultry in South Korea. We sequenced the isolates and performed phylogenetic analysis of complete genome sequences to determine the origin, evolution, and spread patterns of these viruses. Phylogenetic analysis of the hemagglutinin (HA) gene showed that all the isolates belong to H5 clade 2.3.4.4 subgroup B (2.3.4.4b) and form two distinct genetic clusters, G1 and G2. The cluster G1 was closely related to the 2.3.4.4b H5N8 HPAI viruses detected in Europe in early 2020, while the cluster G2 had a close genetic relationship with the 2.3.4.4b H5N8 viruses that circulated in Europe in late 2020. A total of seven distinct genotypes were identified, including five novel reassortants carrying internal genes of low pathogenic avian influenza viruses. Our Bayesian discrete trait phylodynamic analysis between host types suggests that the viruses initially disseminated from migratory waterfowl to domestic duck farms in South Korea. Subsequently, domestic duck farms most likely contributed to the transmission of HPAI viruses to chicken and minor poultry farms, highlighting the need for enhanced, high levels of biosecurity measures at domestic duck farms to effectively prevent the introduction and spread of HPAI.

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