That's because stress weakens the immune system that is needed to fight such illnesses as kennel cough and most shelter dogs are highly stressed. Lynn In a message dated 5/9/2011 9:49:25 P.M. Eastern Daylight Time, [email protected] writes:
Stress tends to be a major trigger which is why the disease is so rampant in shelters and places like kennels, boarding facilities, vet offices, and grooming boutiques. You can have shelter dogs side by side and not every dog will get the cough. There are cases of nose-to-nose contact between healthy and unhealthy dogs without the disease spreading.

