My friend's Cavalier Sam who is 8 years old has developed kennel cough . He is very ill and she is frantic. She lives on her own with him and he is her constant companion. He had the vaccine at the vet before he was left at kennels for afew days , when she picked him up he had the most awful cough and she brought him straight to the vet . He seems to think that the vaccine caused the cough to develop .
Any words of hope and advice would be much appreciated .