[quote1330361443=BernaBerneseMountain] Boosters are important and they strengthen the dog's immunity. Missing shots of booster is fine though but this means that the dog is having the less protection and repeating the dog's vaccine because you forgot what he took already is not harmful but expensive. That is why date of vaccinations is important. My saint bernard has complete vaccines and has no problem because my I have an organize schedule. [/quote1330361443] I respectfully disagree regarding yearly boosters. There is no scientific proof that these yearly shots are necessary or beneficial to the dog's immune system. Why don't humans get yearly shots for the baby shots they got when they were growing up? Pharma companies and vets push these yearly protocols to make money and nothing more. Dogs spend all day licking/eating crap of the ground and never get sick. Why should they be shot with chemicals every year without a reason? A titer is the only scientific way to analyze whether your dog's immune system is compromised.