Peer-reviewed veterinary case report
Can 1-year-old dogs catch and spread H9N2 bird flu virus
By Amirsalehy, H et al.·Published in Australian veterinary journal·2012·School of Veterinary Medicine·View original on PubMed →
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Original publication title: Can dogs carry the global pandemic candidate avian influenza virus H9N2?
- Species:
- dog
Plain-English summary
A group of 1-year-old dogs showed symptoms like sneezing, coughing, and nasal discharge after being exposed to the H9N2 avian influenza virus, which is commonly found in birds. The dogs were either directly infected or came into contact with contaminated surfaces. Tests confirmed the presence of the virus in their nasal swabs and other samples, and they developed antibodies against it. This suggests that dogs can carry and spread the H9N2 virus, raising concerns about their role in transmitting it, especially in areas with poultry outbreaks.
People also search for: dog sneezing and coughing · avian influenza in dogs · H9N2 virus symptoms in pets
Abstract
BACKGROUND: H9N2 avian influenza virus (AIV) is one of the most widely circulating viruses in Eurasia. Recent studies have shown that the molecular recombination of H9N2 and H1N1 could pose a pandemic threat. Mammals that are susceptible to subtype H9N2 may contribute to the spread of the virus. OBJECTIVE: To determine the susceptibility of 1-year-old dogs to H9N2 AIV. PROCEDURE: H9N2 AIV infection was experimentally reproduced in 1-year-old dogs. The animals were intranasally inoculated with a titre of 10(7.5) (50% egg infective dose) of H9N2 AIV isolated from a broiler farm during an outbreak. The animals in the contact group were exposed to contaminated surfaces. RESULTS: Clinical signs including sneezing, coughing and nasal discharge were observed in the inoculated and contact groups. The virus was detected in nasal swab, faecal and buffy coat samples of dogs in both the inoculated and contact groups and both groups developed antibody titres against AIV H9N2 subtype. CONCLUSION: H9N2 AIV isolated from outbreaks in a broiler farm can easily infect dogs and infected animals shed the virus. Because many Asian countries are facing frequent outbreaks of H9N2 infection in the poultry industry, dogs could be a potentially important source of virus transmission within and between poultry farms.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/22928681/