Usually the nasal Bordetella vaccine causes (if at all) only mild cold-like symptoms for a short time. You will find that people don't agree on this particular vaccine. Most places that board dogs require it, and the conventional wisdom is that if you take your dog to a groomer, board, or other places where they are exposed to other dogs, they should have the vaccine. Although bordetella (kennel cough) is usually a self-limiting disease, it can lead to pneumonia. I personally think the risk from the vaccine is much lower than the risk of getting kennel cough, but there are several people on this forum whose opinions I respect and who choose not to give the vaccine.
I don't want to frighten you, but the hard time breathing and honking could be related to trachea problems. Have you had your dog examined by a vet since the first series of antibiotics was prescribed?
The sneezing and coughing could also be allergies -- Yorkies can be prone to them and may need an antihistamine to control the symptoms. I had an older dog who developed allergies a few years ago, and the first time she had an "attack" I thought she was having a heart attack - gasping for breath, making awful noises, etc. My vet put her on some tablets and she lived quite comfortably for several more years - to age 17.
Either way, I would take Darcy to the vet to have it checked out. . |