Flu Symptoms 2024 How Long Does It Last In Dogs. Materials from bond vet estimate that most dogs who get sick will usually recover within two to three weeks with the help of.  — most dogs recover from dog flu within 2 to 3 weeks.

Dogs usually spread the disease to others when they are showing signs, but around 20% of. An isolation period of four weeks from onset of illness is recommended for dogs with suspected or confirmed canine influenza, and for dogs with known exposure to the virus.