Canine influenza is a strain of flu virus that infects dogs, but not humans. Infected dogs will have a persistent cough, runny nose, reduced appetite, fever, lethargy, and rapid breathing. Canine influenza is transmitted through respiratory secretions spread through coughing, sneezing, and even barking. Since the virus was discovered, cases have been reported in all fifty states, but thankfully there are no confirmed cases in El Paso. There is a vaccine for the virus, and your veterinarian will help you decide if your dog needs it.