The last type of vaccine reaction is anaphylaxis. This is a life-threatening allergic reaction that fortunately is not seen commonly in small animal practice. Anaphylactic shock generally occurs within a few minutes of vaccination, so fortunately many of these animals are still at the veterinary office when the reaction occurs, allowing lifesaving treatment to be instituted immediately. This is one of the reasons that I am uncomfortable with owners administering their own vaccinations. Allergic reactions to vaccinations do occur in veterinary medicine, and can range from mild and inconsequential to potentially life-threatening.
Severe reactions require prompt veterinary intervention, but are fortunately quite uncommon.
If your dog has had an adverse reaction to a vaccination in the past, be sure to bring it to your veterinarian's attention, and discuss the best course of action for your pet. Dr. Wayman's biography is available online. The measure of a man is what he does with power. All Rights Reserved.