Dataset Information

Highly pathogenic avian influenza virus (H5N1) in domestic poultry and relationship with migratory birds, South Korea.

ABSTRACT: During the 2006-2007 winter season in South Korea, several outbreaks of highly pathogenic avian influenza virus (H5N1) were confirmed among domestic poultry and in migratory bird habitats. Phylogenetic analysis showed that all isolates were closely related and that all belong to the A/bar-headed goose/Qinghai/5/2005-like lineage rather than the A/chicken/Korea/ES/2003-like lineage.

SUBMITTER: Lee YJ

PROVIDER: S-EPMC2570817 | biostudies-literature | 2008 Mar

REPOSITORIES: biostudies-literature

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Highly pathogenic avian influenza virus (H5N1) in domestic poultry and relationship with migratory birds, South Korea.

Lee Youn-Jeong YJ Choi Young-Ki YK Kim Yong-Joo YJ Song Min-Suk MS Jeong Ok-Mi OM Lee Eun-Kyoung EK Jeon Woo-Jin WJ Jeong Wooseog W Joh Seong-Joon SJ Choi Kang-Seuk KS Her Moon M Kim Min-Chul MC Kim Aeran A Kim Min-Jeong MJ Ho Lee Eun E Oh Tak-Gue TG Moon Ho-Jin HJ Yoo Dae-Won DW Kim Jae-Hong JH Sung Moon-Hee MH Poo Haryoung H Kwon Jun-Hun JH Kim Chul-Joong CJ

Emerging infectious diseases 20080301 3

During the 2006-2007 winter season in South Korea, several outbreaks of highly pathogenic avian influenza virus (H5N1) were confirmed among domestic poultry and in migratory bird habitats. Phylogenetic analysis showed that all isolates were closely related and that all belong to the A/bar-headed goose/Qinghai/5/2005-like lineage rather than the A/chicken/Korea/ES/2003-like lineage. ...[more]

PMID: 18325269

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Project description:A large number of highly pathogenic avian influenza (HPAI) H5N1 outbreaks in poultry and wild birds have been reported in Europe since 2005. Distinct spatial patterns in poultry and wild birds suggest that different environmental drivers and potentially different spread mechanisms are operating. However, previous studies found no difference between these two outbreak types when only the effect of physical environmental factors was analysed. The influence of physical and anthropogenic environmental variables and interactions between the two has only been investigated for wild bird outbreaks. We therefore tested the effect of these environmental factors on HPAI H5N1 outbreaks in poultry, and the potential spread mechanism, and discussed how these differ from those observed in wild birds. Logistic regression analyses were used to quantify the relationship between HPAI H5N1 outbreaks in poultry and environmental factors. Poultry outbreaks increased with an increasing human population density combined with close proximity to lakes or wetlands, increased temperatures and reduced precipitation during the cold season. A risk map was generated based on the identified key factors. In wild birds, outbreaks were strongly associated with an increased Normalized Difference Vegetation Index (NDVI) and lower elevation, though they were similarly affected by climatic conditions as poultry outbreaks. This is the first study that analyses the differences in environmental drivers and spread mechanisms between poultry and wild bird outbreaks. Outbreaks in poultry mostly occurred in areas where the location of farms or trade areas overlapped with habitats for wild birds, whereas outbreaks in wild birds were mainly found in areas where food and shelters are available. The different environmental drivers suggest that different spread mechanisms might be involved: HPAI H5N1 spread to poultry via both poultry and wild birds, whereas contact with wild birds alone seems to drive the outbreaks in wild birds.

Dataset Information

Highly pathogenic avian influenza virus (H5N1) in domestic poultry and relationship with migratory birds, South Korea.

Publications

Highly pathogenic avian influenza virus (H5N1) in domestic poultry and relationship with migratory birds, South Korea.

Similar Datasets

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