Puppy Vaccination Schedule: Core Shots and Timing
Vaccination is one of the most effective ways to protect your puppy from serious infectious diseases. The details vary by region and vet, but the principle is the same: a series of shots spaced over several weeks builds protection while the puppy's immune system matures. This guide gives a general overview. Always follow your veterinarian's specific plan.
Why puppies need a series of vaccines
Newborn puppies receive antibodies from their mother's milk. These protect them early on, but they also interfere with vaccines. Because it is hard to know exactly when the mother's antibodies fade, puppies receive several doses, spaced a few weeks apart, to make sure at least one works when the puppy's immune system is ready to respond. The final puppy dose is usually given at around sixteen weeks or older.
Core vaccines
Core vaccines protect against diseases that are serious, widespread or both. They are recommended for all puppies. Typically they include:
- Distemper: A viral disease affecting multiple body systems. See our guide to canine distemper.
- Parvovirus: A severe, often deadly gut disease, especially in puppies. See our guide to parvovirus.
- Adenovirus (hepatitis): A viral infection that can damage the liver.
- Rabies: A fatal viral disease that is also a public health risk. Rabies vaccination is legally required in many places. See our guide on rabies in dogs.
Distemper, parvovirus and adenovirus are usually given in a combination vaccine.
Non-core vaccines
Non-core vaccines depend on your puppy's lifestyle and where you live.
- Bordetella (kennel cough): For dogs that board, attend daycare or meet many dogs. See kennel cough in dogs.
- Leptospirosis: For dogs exposed to wildlife, standing water or rural areas. See leptospirosis in dogs.
- Lyme disease: For dogs in tick-heavy regions. See Lyme disease in dogs.
- Canine influenza: For dogs in contact with many other dogs. See canine influenza.
- Others depending on region.
Your vet will recommend which apply. Our guide to core vs non-core vaccines explains more.
A typical timeline
Schedules vary, but a common pattern looks like this:
- 6 to 8 weeks: First combination vaccine.
- 10 to 12 weeks: Second combination vaccine, and possibly non-core vaccines.
- 14 to 16 weeks: Third combination vaccine, and rabies where appropriate.
- 16 weeks or later: A final puppy vaccine in some protocols, especially in high-risk areas.
- 12 to 16 months: A booster, then regular boosters as recommended.
Your vet may adjust this based on your puppy's history and local risk.
What to expect at appointments
The vet will examine your puppy, discuss health and administer vaccines by injection, and sometimes by nasal drops. Mild reactions such as tiredness, mild fever or soreness at the injection site can occur for a day or two. Contact your vet immediately if you see facial swelling, hives, vomiting, collapse or difficulty breathing, since these may indicate an allergic reaction. See our guide to dog vaccine reactions.
When is my puppy protected?
Protection builds over time. Your puppy is considered adequately protected once it has completed its series and a short time has passed. Until then, take precautions. Our guides on when puppies can go outside and socializing an unvaccinated puppy explain how to balance safety and socialization.
Keeping records
- Keep a copy of every vaccination record.
- Ask your vet to record dates, vaccine names and batch numbers.
- Bring records to boarding, grooming and training facilities.
- Set reminders for boosters.
Common questions
- What if I missed a booster? Contact your vet. The schedule may need adjusting.
- Can my puppy be vaccinated if it is unwell? Usually not until it recovers. Ask your vet.
- Are titers an option for boosters? Some vets offer titer testing for certain vaccines. See our guide to vaccine titers.
The takeaway
Vaccination is a simple step with major benefits. Follow your vet's schedule, keep records and stay alert after each shot. Your puppy will be protected against some of the most dangerous canine diseases. See our guide to the first vet visit to prepare.
Frequently asked questions
When do puppies get their first vaccines?
Often around six to eight weeks, but timing depends on the vaccine and your vet's protocol.
Why do puppies need multiple vaccine doses?
Antibodies from the mother can block the vaccine in early weeks, so repeated doses ensure protection once those antibodies fade.
When is my puppy fully protected?
Usually one to two weeks after the final puppy vaccine, which is often given at around sixteen weeks or later.
Are puppy vaccinations safe?
They are generally safe and highly effective. Mild reactions such as tiredness or soreness are common, and serious reactions are rare.