Peer-reviewed veterinary case report
Canine influenza H3N8 virus found in Florida dogs with respiratory
By Payungporn, Sunchai et al.·Published in Emerging infectious diseases·2008·Centers for Disease Control and Prevention, United States·View original on PubMed →
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Original publication title: Influenza A virus (H3N8) in dogs with respiratory disease, Florida.
- Species:
- dog
Plain-English summary
A group of dogs in Florida, including breeds other than greyhounds, developed serious breathing problems and some tragically died. Testing revealed that they were infected with the H3N8 strain of the canine influenza virus, which had previously been seen mainly in greyhounds. This finding shows that the virus can affect various dog breeds, not just greyhounds. Ongoing monitoring is essential to track any changes in the virus that could affect dogs in the future.
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Abstract
In 2004, canine influenza virus subtype H3N8 emerged in greyhounds in the United States. Subsequent serologic evidence indicated virus circulation in dog breeds other than greyhounds, but the virus had not been isolated from affected animals. In 2005, we conducted virologic investigation of 7 nongreyhound dogs that died from respiratory disease in Florida and isolated influenza subtype H3N8 virus. Antigenic and genetic analysis of A/canine/Jacksonville/2005 (H3N8) and A/canine/Miami/2005 (H3N8) found similarity to earlier isolates from greyhounds, which indicates that canine influenza viruses are not restricted to greyhounds. The hemagglutinin contained 5 conserved amino acid differences that distinguish canine from equine lineages. The antigenic homogeneity of the canine viruses suggests that measurable antigenic drift has not yet occurred. Continued surveillance and antigenic analyses should monitor possible emergence of antigenic variants of canine influenza virus.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/18507900/