2026 Puppy Vaccine Schedule: Week-by-Week Shots (6 to 16 Weeks)
Puppies get their first shots between 6 and 8 weeks of age and finish the core series at 16 weeks. Here is the standard 2026 week-by-week schedule most U.S. vets follow, based on AAHA guidelines.
A new puppy's immune system starts out protected by antibodies from its mother's milk. Those maternal antibodies fade over the first few months, but they also block vaccines from working fully, which is exactly why puppy shots are given as a series of boosters every 3 to 4 weeks rather than as a single shot. By repeating the DHPP combination at roughly 6-8, 10-12 and 14-16 weeks, your vet makes sure the puppy is protected the moment its own immune system can respond.
DHPP is the backbone of the puppy series. It covers distemper, hepatitis (canine adenovirus), parvovirus and parainfluenza, four diseases that are common, contagious and often fatal to unvaccinated puppies. Parvovirus in particular is a major killer of young dogs, so finishing all three or four DHPP doses on time is one of the most important things you can do for your puppy. Breeds such as Rottweilers, Pit Bulls and Dobermans have a documented higher parvovirus susceptibility and should never miss a booster.
Rabies is a core vaccine legally required in every U.S. state. It is usually given once between 12 and 16 weeks, then boostered a year later and every 1 to 3 years after that depending on state law. Non-core vaccines such as Bordetella (kennel cough), leptospirosis and Lyme disease are added based on your puppy's lifestyle and where you live. For example, a puppy that will go to dog daycare needs Bordetella, and a puppy in the Northeast near woods and ticks should get Lyme.
Until the series is complete around 16 weeks, keep your puppy away from dog parks, pet stores and other high-traffic places where unvaccinated dogs gather. Socialization is still critically important, so focus on safe, controlled settings with healthy, fully vaccinated adult dogs you know. Puppy classes that require proof of vaccination are a great option. The 8-16 week window is the prime socialization period and missing it can lead to lifelong behavioral issues.
After the final puppy shot at 16 weeks, most vets recommend waiting about one week before taking your puppy to public dog spaces to ensure full immunity has developed. At that point your puppy is ready for the wider world with solid protection against the most dangerous canine diseases.
Want exact dates for your own dog? Use the free 2026 vaccine schedule tool on the homepage. Enter a birth date and breed to get a personalized timeline with reminders.
Frequently asked questions
When do puppies get their first shots in 2026?
The first DHPP shot is usually given at 6 to 8 weeks of age, with boosters every 3 to 4 weeks until 16 weeks, per current AAHA 2026 guidelines.
How many rounds of shots do puppies need?
Most puppies get three to four rounds of DHPP between 6 and 16 weeks, plus a rabies shot at 12 to 16 weeks. High-risk breeds like Rottweilers may benefit from a fourth DHPP at 18-20 weeks.
Can my puppy go outside before vaccines are done?
Avoid dog parks and high-traffic dog areas until about a week after the final 16-week shots. Controlled socialization with healthy, vaccinated dogs in private settings is fine and important during the critical 8-16 week window.
What if I miss a puppy booster by a week or two?
Don't panic. Contact your vet and resume the schedule. A short delay is better than skipping entirely. Your vet may adjust the remaining timing slightly.
Why does my puppy need so many DHPP shots?
Maternal antibodies from the mother's milk block vaccines from working. The repeated doses ensure protection kicks in exactly when those antibodies fade, which varies from puppy to puppy.
Is the 2026 puppy vaccine schedule different from previous years?
The core schedule remains stable. In 2026 the AAHA continues to recommend the same 6-16 week DHPP series. Newer non-core vaccines like canine influenza vaccines may be discussed based on regional outbreaks.