Last year, we met Bree's Breeder at our mutual Vet where the Litter was getting their vaccinations and their Health Certifications; after sitting on the floor with all the newly vaccinated pups and making my choice, I brought Bree home. We spent some time introducing her to the pack, then put her into semi-isolation, but I didn't change my clothes. After all, there was no litter on the ground at that time and all my dogs were up to date on their vaccinations. I thought we were all good.
Three days later, Kona spent the night coughing; a run down to the Vet confirmed that she had Kennel Cough; three days later Dreama was coughing, a day later, it was our Callie and finally, poor little Bree was taken to see our Vet and put on medication as well. Cain and Roamin' caught a mild case and didn't require medication, but all the girls were on a 7 day dose of strong medications to recover.
Kona, Dreama and Callie were all vaccinated against Kennel Cough and had not been off our property in the ten days prior to becoming symptomatic. So, how did they contract Kennel Cough? Bree and I both carried the virus into our home; she shedding it through her nostrils and I because my clothing had caught some of the shedding of the litter of newly vaccinated puppies I'd been loving on at the Vets office. Kona was the first to be exposed and then exposed Dreama and Callie so despite the quarantine that Bree was placed into, she also contracted the cough. That is all it took for a virus to spread through our pack. Thankfully, we did not have a young litter of puppies on the ground at that time!