First introduction of highly pathogenic H5N1 avian influenza A viruses in wild and domestic birds in Denmark, Northern Europe
2007

First Detection of H5N1 Avian Influenza in Denmark

Sample size: 44 publication 10 minutes Evidence: moderate

Author Information

Author(s): Karoline Bragstad, Poul H. Jørgensen, Kurt Handberg, Anne S. Hammer, Susanne Kabell, Anders Fomsgaard

Primary Institution: Statens Serum Institut and National Veterinary Institute, Technical University of Denmark

Hypothesis

How did H5N1 avian influenza viruses spread to wild and domestic birds in Denmark?

Conclusion

The first case of H5N1 infection in wild and domestic birds in Denmark was reported in March 2006, with viruses originating from wild bird strains in Qinghai, China.

Supporting Evidence

  • A total of 44 wild birds tested positive for H5N1 in Denmark.
  • The Danish H5N1 viruses were closely related to German isolates.
  • The viruses likely spread to Denmark through migratory birds.

Takeaway

In 2006, some birds in Denmark got sick from a virus called H5N1, which usually affects birds and can be dangerous.

Methodology

The study involved collecting dead wild birds, testing for H5N1, and performing full-genome sequencing of the isolates.

Limitations

The study primarily focused on a limited number of isolates and may not represent all circulating strains.

Participant Demographics

The study included various species of wild birds and domestic poultry.

Digital Object Identifier (DOI)

10.1186/1743-422X-4-43

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