Peer-reviewed veterinary case report
Fever linked to nasal virus shedding in dogs with H3N2 flu
By Song, Daesub et al.·Published in Virology journal·2011·Korea Research Institute of Bioscience and Biotechnology, South Korea·View original on PubMed →
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Original publication title: Association between nasal shedding and fever that influenza A (H3N2) induces in dogs.
- Species:
- dog
Plain-English summary
A 10-week-old Beagle was experimentally infected with the H3N2 strain of canine influenza virus and developed symptoms like sneezing, nasal discharge, and coughing. After being housed with seven other uninfected Beagles, four of them also showed similar symptoms. All symptomatic dogs had elevated body temperatures above 39.5°C, indicating fever, and they shed the virus in their nasal secretions. This study highlights the importance of monitoring for fever and respiratory symptoms in dogs exposed to canine influenza, as these signs are linked to the spread of the virus.
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Abstract
BACKGROUND: Avian origin canine influenza virus was reported in Korea. The dog to dog contact transmission of the avian origin canine influenza virus (CIV) H3N2 and CIV H3N8 was shown by experimental contact transmission. This study was focused on viral excretion and fever in order to elucidate the epidemiological associations which might be helpful to control the disease transmissions in CIV outbreak in dogs. METHODS: An influenza seronegative 10-week-old Beagle dog was experimentally inoculated with the canine influenza virus A/canine/01/2007, subtype H3N2. Eight hours after inoculation, the infected dog was cohoused with seven uninfected Beagle dogs. Clinical signs including fever were recorded for 14 days post inoculation. RESULTS: The infected dog and four of seven contact dogs in the study showed clinical signs (sneezing, nasal discharge and coughing) during the study. Viral shedding occurred in all of the animals tested and began on 1 to 6 DPI in dogs with clinical signs. Elevated body temperatures above 39.5 °C (geometric mean temperature of 39.86 °C ± 0.49) were observed in all symptomatic dogs. The mean viral titer during fever was 2.99 log EID₅₀/ml, which was significantly higher than the viral titer detected in the non fever. CONCLUSIONS: The data show that contact dogs with a canine influenza infected dog shed different levels of virus in their nasal excretions and demonstrate that clinical signs, including fever, significantly correlate with the viral shedding.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/21205327/