If you’re seeing canine influenza in your practice, recent findings show it’s best to suggest a 21-day isolation period. A study published in the Journal of the American Veterinary Medical Association that tested shelter dogs with H3N2 canine influenza found that the virus was shed intermittently for up to 24 days after the initial positive test.
Source: DVM 360, July 18, 2016. via AVMA SmartBrief.
Infections dropped significantly when shelters imposed a 21-day quarantine for infected dogs, so veterinarians may want to recommend isolation of infected dogs for at least that long, writes veterinarian Kathryn Primm.