Glad to hear Chester is doing better.
When I took our new addition "Abby" to the vets this week, I decided to get the bordetella vaccine.
Joyce
I was told Kennel cough isn't prevented by the treatment it just cuts down the severity of the symptoms should they get exposed. My dogs (2)

had it one year after they were boarded and gave it to my shih szu

who wasn't kenneled.

They had the treatment a month before boarding which is plenty of time for them to build up the immunity. I asked the vet why did they get the virus since they had the treatment and he said they can still get it just not as bad. They sounded terrible. We used the DM the symptoms. But I personally wouldn't get the shot every 6 months overdoing vaccines/inhalers on pets isnt really safe for their immune systems. IMO