I am currently fostering for a pretty shady animal shelter, and this IS my last foster through them. I have talked to a collie rescue and I will be fostering though them (YAY!!!) My dogs have their bortitella vac. but i know that it is not 100% effective. is it worth even giving the vac? Is kennel cough a big deal? Dont the dogs just have a cough for a couple of weeks and usually it is not even treated... right? I worry about over vac. my dogs. but I do want them as safe as can be.