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Home / Equine Research Bank / Emerg Infect Dis / Influenza virus transmission from horses to dogs, Australia.
Emerging infectious diseases2010; 16(4); 699-702; doi: 10.3201/eid1604.091489

Influenza virus transmission from horses to dogs, Australia.

Abstract: During the 2007 equine influenza outbreak in Australia, respiratory disease in dogs in close contact with infected horses was noted; influenza (H3N8) virus infection was confirmed. Nucleotide sequence of the virus from dogs was identical to that from horses. No evidence of dog-to-dog transmission or virus persistence in dogs was found.
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Publication Date: 2010-03-31 PubMed ID: 20350392PubMed Central: PMC3321956DOI: 10.3201/eid1604.091489Google Scholar: Lookup
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  • Journal Article
  • Research Support
  • Non-U.S. Gov't

Summary

This research summary has been generated with artificial intelligence and may contain errors and omissions. Refer to the original study to confirm details provided. Submit correction.

This study evaluates a 2007 incident in Australia where dogs in close contact with horses infected with influenza virus (H3N8) also contracted the disease. The researchers discovered that the virus’s genetic sequence in dogs was identical to that from horses, suggesting a direct transmission. However, they found no evidence of the virus transferring between dogs or persisting in dogs.

Introduction and Background

  • The equine influenza outbreak in 2007 in Australia had an unexpected consequence – the apparent transmission of the virus from horses to dogs. This was a novel discovery, which raised questions about interspecies transferability of the influenza virus, particularly the H3N8 strain.

Research Findings

  • Dogs in close contact with infected horses appeared to contract the respiratory disease. This suggested direct transmission from horses to dogs.
  • Researchers confirmed this transmission by comparing the nucleotide sequence (the genetic makeup) of the virus found in dogs with those in horses.
  • The identical genetic sequence between the virus in horses and dogs indicated that the influenza strain had not mutated when moving from the horse to the dog, confirming that the virus had indeed jumped species without any genetic changes.

Limitations and Conclusions

  • Despite this confirmation of interspecies transmission, the study did not identify any evidence of dog-to-dog transmission.
  • Moreover, there did not appear to be any persistence of the virus in dogs over time.
  • This suggests that this interspecies transmission event might be rare and not have a significant impact on overall influenza spread or dog health.
  • However, it highlights the potential for such transmission to occur, which may be significant in specific outbreak scenarios and requires more attention in disease surveillance and control efforts.

Cite This Article

APA
Kirkland PD, Finlaison DS, Crispe E, Hurt AC. (2010). Influenza virus transmission from horses to dogs, Australia. Emerg Infect Dis, 16(4), 699-702. https://doi.org/10.3201/eid1604.091489

Publication

Emerging infectious diseases
ISSN: 1080-6059
NlmUniqueID: 9508155
Country: United States
Language: English
Volume: 16
Issue: 4
Pages: 699-702

Researcher Affiliations

Kirkland, Peter D
  • Virology Laboratory, Elizabeth Macarthur Agricultural Institute, Private Bag 4008, Narellen, New South Wales 2567, Australia. peter.kirkland@industry.nsw.gov.au
Finlaison, Deborah S
    Crispe, Ellie
      Hurt, Aeron C

        MeSH Terms

        • Amino Acid Sequence
        • Animals
        • Australia / epidemiology
        • Dog Diseases / virology
        • Dogs / virology
        • Horse Diseases / transmission
        • Horse Diseases / virology
        • Horses / virology
        • Influenza A Virus, H3N8 Subtype / genetics
        • Influenza A Virus, H3N8 Subtype / pathogenicity
        • Molecular Sequence Data
        • Orthomyxoviridae Infections / epidemiology
        • Orthomyxoviridae Infections / transmission
        • Orthomyxoviridae Infections / veterinary
        • Orthomyxoviridae Infections / virology
        • Phylogeny

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