There is a dog flu outbreak currently surging across the country; no need to be alarmed, but please be certain that your dogs are up-to-date on all flu related vaccines. The below article sheds some light on the situation. Please remember, I always need any updated vaccine copies, every time you visit the vet. https://www.ctvsh.com/services/dogs/blog/what-you-need-know-about-recent-canine-influenza-outbreaks