Background
  1. Home
  2. News
  3. FAQ
  4. What happens if a dog doesn't get a distemper shot?

What happens if a dog doesn't get a distemper shot?

A dog that doesn't receive a distemper shot is at high risk of contracting canine distemper, a severe and often fatal viral disease with no known cure.

The Dangers of Skipping the Canine Distemper Vaccine

Canine distemper is a highly contagious and potentially fatal viral disease that affects dogs and several other animal species. Caused by the canine distemper virus (CDV), it targets the canine’s respiratory, gastrointestinal, and nervous systems. Puppies and unvaccinated adult dogs are particularly vulnerable. Without proper vaccination, the outcomes can be devastating.

Understanding Canine Distemper

Canine distemper is spread mainly through airborne transmission. Infected animals release the virus through coughing, sneezing, barking, and fluids like saliva and urine. It can also be transmitted via shared food and water bowls and contaminated environments. Even seemingly healthy wildlife like raccoons, foxes, or skunks can serve as virus reservoirs.

Symptoms of Infection

Initial clinical signs often mimic other illnesses but quickly worsen. Dogs without vaccination are vulnerable to:
  • Eye and nasal discharge
  • Fever and lethargy
  • Vomiting, diarrhea, and coughing
  • Loss of appetite
As the virus progresses, it invades the nervous system leading to:
  • Seizures and tremors
  • Muscle twitching and coordination loss
  • Head tilt, walking in circles
  • Partial or complete paralysis
  • Hardening of nose and footpads ("hard pad disease")
If infected before adult teeth emerge, puppies may suffer permanent dental damage. Roughly half of infected dogs die; survivors often have irreversible neurologic effects.

Complications and Long-Term Consequences

There is currently no cure for distemper. Treatment is limited to supportive measures like hydration therapy, anti-diarrheal and anti-nausea medications, antibiotics for secondary infections, and drugs to manage seizures or tremors. The burden of isolating the dog and lengthy care is emotionally and financially taxing.

Why Vaccination Is Essential

The most effective prevention method is consistent and timely vaccination. The distemper vaccine is typically given as part of a combination vaccine—DHPP, DAPP, or DA2PP—that also covers parvovirus, adenovirus, and parainfluenza.

Recommended Vaccination Schedule

  • Puppies: Start at 6–8 weeks of age
  • Boosters: Every 2–4 weeks until 14–16 weeks of age
  • Adult Dogs: Booster at 1 year of age, then every 3 years or as advised by a vet
Maternal antibodies can interfere with the efficacy of early vaccines, making it vital to complete the full puppy series for immunity.

What Happens Without the Vaccine?

When a dog isn’t vaccinated for distemper:
  1. They remain unprotected against a highly contagious disease found in both domestic and wild animals.
  2. They are susceptible to developing life-threatening respiratory, gastrointestinal, and neurologic symptoms.
  3. Treatment options are limited to supportive care; there is no antiviral cure.
  4. They risk death, as nearly 50% of infected dogs do not survive.
  5. They may suffer permanent damage even if they survive, often with lasting neurologic or physical impairments.

Other Prevention Tips

Aside from vaccination, consider the following precautions:
  • Avoid exposure to sick or unvaccinated animals
  • Do not take puppies to public places until their initial vaccinations are complete
  • Maintain proper hygiene and promptly clean up waste
  • Use boarding, grooming, and daycare services that enforce strict vaccine policies

Side Effects and Safety

The distemper vaccine is generally safe. Common side effects include:
  • Temporary soreness at injection site
  • Slight fever or lethargy
  • Reduced appetite
Rare adverse reactions may involve:
  • Vomiting
  • Facial swelling
  • Hives or itching
  • Difficulty breathing or collapse
Such reactions are rare and treatable. If observed, seek veterinary care immediately.

The Cost and Value of Protection

The typical cost of a distemper vaccine is $25–$50 per dose. When compared to the expense and emotional stress of treating an unvaccinated dog for distemper, vaccination is a prudent and lifesaving investment. Some pet insurance plans and wellness programs help cover these costs.

Distemper Vaccine vs. Bordetella Vaccine

Owners often confuse vaccines. The distemper vaccine is a core vaccine and distinct from Bordetella, which is non-core and given based on lifestyle or exposure risks (e.g., frequent boarding or dog parks).

Final Thoughts

Choosing not to vaccinate leaves a dog dangerously exposed to a devastating and preventable disease. Canine distemper is common in wildlife and could be present in everyday environments like parks, groomers, or veterinary clinics. For your dog’s well-being and public health, following proper vaccination protocols is essential.

Share on:

canine distemper

 dog vaccination

 distemper shot

 puppy immunization

 core vaccines

 DHPP vaccine

 DAPP vaccine

 DA2PP

 distemper symptoms

 neurologic signs in dogs

 hard pad disease

 canine virus

 dog health care

 puppy vaccine schedule

 respiratory illness in dogs

 contagious dog diseases

 supportive care for dogs

 dog virus prevention

 canine vaccination guide

 infectious disease in dogs

 dog seizure causes

 distemper treatment

 puppy sickness

 wildlife disease exposure

 vaccine side effects in dogs

Recommended

Border Collie jumping over a red and white hurdle during agility training

Comprehensive Guide to Dog Sports: Activities for Dogs and Owners

Read the article

Exterior view of Evansville Animal Care and Control Center building

Evansville Animal Care and Control Center Addresses Dog Theft and Security Enhancements

Read the article

Dog wearing a protective mask outdoors amid Delhi smog

Delhi Air Pollution and Pets: How Toxic Haze Threatens Your Furry Family Members

Read the article

Today is the perfect time to get your

Pet Health Report

Upload a photo of your pet to receive instant health and care insights.

report_card