Any pet can have a reaction to a vaccine, even one that has been given before with no problem. It is important to understand the difference between “normal” reactions and “abnormal” reactions.
“Normal” Reaction: Pets may feel lethargic, ache-y, have a mild fever or poor appetite. This is the body’s normal, healthy response to immune stimulus and should resolve within a day or so. If symptoms are severe or continue for more than one day, please call the office.
“Abnormal” Reaction: Rarely, a pet may experience a serious allergic reaction to a vaccine, leading to anaphylactic shock. This is a serious, life-threatening condition. Signs of allergic reaction can include sudden and profound lethargy, vomiting, diarrhea, swelling of the face or legs, sudden itchiness, hives, collapse, or difficulty breathing. These symptoms can occur within a few minutes of vaccination, or a few hours later. You should call the office immediately if any one of these symptoms occurs.
Vaccine Site Lumps: Many pets experience a localized swelling at the site of the vaccine injection. This is the body’s response to foreign material being injected. Very rarely a more serious condition may form at the site of a vaccine.
It is important that all vaccine lumps are reported to the Vet’s Office. We can then speak with you over the phone and decide what treatment, if any, is required for your pet. These reactions should be recorded in your pet’s chart for future reference.