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Vaccine Reactions in Dogs: Everything You Should Know

While preventive care is a crucial part of protecting your pet against serious conditions and diseases, it's important to know the risks that may be involved, even if they are rare. Today, our Orange vets talk about pet vaccinations, the common vaccine reactions in dogs, and why these routine shots are so important.

What are dog vaccinations for?

Vaccinations starting when your dog is just a puppy help to give your pup their very best chance at a long and healthy life. Vaccine boosters are also necessary regularly to maintain your dog's protection against diseases. Some of the most important vaccinations for puppies to have include rabies, hepatitis, and parvovirus.

Although our vets believe that vaccines are important for all dogs, not all dogs need the same vaccines. Which shots your dog should have depends upon where you live, your dog's age, and your pup's lifestyle. These factors combine to determine your dog's risk of contracting diseases that can be vaccinated against. Your vet can help you determine which immunizations are right for your pet.

Mild Dog Vaccinations Side Effects

The fact is, any medical procedure has the potential to lead to an adverse reaction. Reactions to a vaccine are uncommon but when they do occur they tend to be very mild and not last very long.

Knowing the symptoms of a reaction can help you to spot a reaction if your dog does have one, and may help to make vaccination time less stressful for you and your dog.

  • Lethargy - Your dog may appear sluggish and lethargic after receiving their shots. This can include noticing that your dog is having trouble walking after their shots and is fairly normal. Sometimes this is also accompanied by a mild fever caused by your dog's immune system responding to the vaccination. These mild symptoms are perfectly normal and should only last a day or two. If your dog isn’t back to normal within 48 hours, contact your veterinarian to let them know.
  • Sneezing & Cold-Like Symptoms - While the majority of vaccines are administered by injection, the parainfluenza and Bordetella bronchiseptica virus vaccines are given in the form of nasal sprays or drops. Reactions to these vaccines tend to look like basic cold symptoms and may include sneezing, coughing, and a runny nose. Expect your pup to recover from these symptoms within a day or two. If these symptoms become more severe or it’s taking your pup longer to recover, contact your vet for advice.
  • Soreness - You may notice that your puppy is yelping after their vaccinations or crying when you pick him up after his shots. This is normal as the injection area may be feeling a little sore. This will relieve itself fairly quickly.

Serious Side Effects From Dogs Vaccinations

As mentioned above, most reactions dogs have to vaccines will be mild and short-lived, in some rare cases pets can have more severe reactions that require immediate medical attention.

  • Anaphylaxis - This severe allergic reaction can involve symptoms including facial swelling, diarrhea, itchiness, hives, vomiting, and breathing difficulties. This type of severe reaction will usually occur very soon after your dog receives their injection, (typically while you are still at the vet's office), but can happen up to 48 hours after the vaccine is given.
  • Shock - Symptoms of shock following vaccines can include a slow heart rate, decreased blood pressure, and generalized weakness. You may also see a gray tongue and pale mucous membranes.

If your dog displays signs of anaphylaxis or shock, call your vet immediately or contact the emergency veterinary clinic closest to you.

How are vaccine reactions in dogs treated?

Fortunately, adverse reactions resulting from vaccinations can often be reversed with proper treatment, and your dog should recover very quickly.

  • If your dog's reaction is not life-threatening and confined to the skin, treatment is likely to include cortisone and/or antihistamines. Symptoms will usually clear up quickly once treatments begin.
  • Serious reactions such as anaphylaxis and shock require immediate veterinary care! Medications and intravenous fluids will be provided to help your dog recover and restore your pet's vital signs. Epinephrine and/or cortisone may also be used in these cases.

How can vaccination reactions be prevented?

Keeping your dog's shots up to date helps to protect your pet’s long-term health, and it's important to remember that the risk of having a serious reaction to a vaccine is very low for most dogs.

That said, if your dog has experienced an adverse reaction to a vaccine in the past it’s important to inform your vet so this history can be recorded in your pet's medical files. If a previous reaction has occurred your vet may recommend skipping a specific vaccination in the future.

There is a small increase in the risk of reactions to vaccines when multiple shots are given during a single appointment. This can be especially true for smaller dogs. To minimize the risk of an adverse reaction in your pet, your vet may recommend spreading your dog’s vaccinations out over several days rather than doing them all at once.

Why is it important to have your dog vaccinated?

Knowing your dog's risk of reacting again if revaccinated is difficult to predict. Some dogs will not react when they have the vaccination a second time, some dogs will experience the same reaction that they had previously, and in rare cases, dogs will experience a serious life-threatening reaction to a vaccine that they have previously had.

If your dog has reacted to their first round of shots, speak to your veterinarian about the risks and benefits of vaccines and your dog's health. Your vet may recommend not vaccinating your pup for particular diseases based on your pet's previous reaction.

Note: The advice provided in this post is intended for informational purposes and does not constitute medical advice regarding pets. For an accurate diagnosis of your pet's condition, please make an appointment with your vet.

do you need to bring your dog in for routine vaccinations or other preventive care? Contact our Orange vets today to book an appointment for your dog.

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