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- Association between nasal shedding and fever that influenza A (H3N2) induces in dogs
- Dae Sub Song; H Moon; K Jung; M Yeom; Hye Kwon Kim; S Han; D An; J Oh; J Kim; B Park; B Kang
- Bibliographic Citation
- Virology Journal, vol. 8, pp. 1-1
- Publication Year
- 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 EID？？/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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