Most puppies in the United States begin vaccinations at 6 to 8 weeks old. The DAPP vaccine is repeated every 2 to 4 weeks until the puppy receives a final dose at 16 weeks of age or older. Leptospirosis can begin at 12 weeks, while rabies timing depends on state law and the vaccine label.
Not every dog vaccine is given annually. After the puppy series and the first adult booster, DAPP is generally repeated every three years. Leptospirosis is given annually, and rabies may be required every one or three years. Lifestyle vaccines are added only when the dog’s exposure makes them useful.
Typical Puppy Vaccination Schedule
This table is a planning guide rather than a prescription. A veterinarian may adjust the dates based on the puppy’s age, health, previous records, local disease risk, and the products available at the clinic.
| Age or Stage | Vaccines Commonly Discussed | What to Check |
|---|---|---|
| 6–8 weeks | First DAPP dose | Confirm the vaccine record from the breeder, shelter, or rescue. |
| 9–12 weeks | Next DAPP dose; risk-based vaccines may begin | Leptospirosis should not begin before 12 weeks. |
| 12–16 weeks | DAPP doses every 2–4 weeks; two-dose leptospirosis series; rabies | The final puppy DAPP dose should be given at 16 weeks or older. |
| Within one year after the puppy series | DAPP booster, leptospirosis booster, and rabies when due | Use the rabies certificate and veterinary record rather than guessing the date. |
| Adult maintenance | DAPP about every three years; leptospirosis annually; rabies as legally required | Reassess travel, boarding, daycare, tick, and wildlife exposure each year. |
AAHA recommends at least three DAPP combination doses between 6 and 16 weeks of age, spaced 2 to 4 weeks apart. Puppies starting late and adult dogs with unknown records need a different catch-up schedule.
Core Dog Vaccines in the United States
DAPP or DA2PP
DAPP protects against canine distemper, adenovirus, parvovirus, and usually parainfluenza. Clinics may use slightly different abbreviations, but the vaccine record should list the individual diseases rather than only a marketing name.
After the puppy series, one combination booster is given within a year. Later DAPP boosters are generally given at three-year intervals.
Leptospirosis
AAHA updated its guidelines in 2024 to classify leptospirosis vaccination as core for dogs. The initial series consists of two doses given 2 to 4 weeks apart, starting at 12 weeks or older. It then requires annual boosters.
Leptospirosis is not limited to farm or hunting dogs. Dogs can encounter contaminated water or soil in urban, suburban, and rural areas.
Rabies
Rabies vaccination is controlled by state and local law. The permitted age, who may administer the vaccine, and whether a one-year or three-year certificate applies can differ by location and vaccine product.
The CDC advises following local law and veterinary supervision. A dog is not considered immunized until 28 days after its first rabies vaccination, while a booster is recognized immediately in a dog with previous vaccination history.
Vaccines Based on Lifestyle and Location
- Bordetella: Commonly considered for dogs attending boarding, daycare, grooming, group training, shows, or other high-contact environments.
- Canine influenza: May be recommended for dogs with frequent close contact with unfamiliar dogs or during regional outbreaks.
- Lyme disease: Considered when a dog lives in or travels to tick-endemic areas and spends time in tick habitat.
- Rattlesnake toxoid: Used selectively in locations where encounters with specific rattlesnake species are a meaningful risk.
These vaccines are not automatically necessary for every dog. The decision should be based on actual exposure rather than whether a vaccine is available.
What Do 5-in-1, 6-in-1, and 10-in-1 Mean?
Number-based names are not standardized. Two products labeled “6-in-1” may contain different antigens, so the number alone does not explain what diseases are covered.
American clinics more often describe vaccines as DAPP, DA2PP, DAPP-L, or by listing the diseases separately. Canine enteric coronavirus vaccination is not included in AAHA’s current core or noncore recommendations.
A larger number on the label also does not prove that the vaccine is more likely to cause a reaction. AAHA notes that combination vaccines are not automatically associated with more adverse events than single-component vaccines. The individual dog’s history matters more.
How Much Do Dog Vaccinations Cost?
There is no reliable nationwide price because clinics charge differently for the vaccine, physical exam, administration, rabies tag, medical-waste fee, and additional testing.
Current posted examples from two U.S. veterinary clinics place individual DAPP, rabies, and Bordetella vaccines at approximately $29 to $54 each. A full-service appointment may cost more when an examination or other preventive care is included. Nonprofit vaccine clinics may offer lower prices, but they may not provide the same complete examination or ongoing veterinary relationship.
Before the appointment, request an itemized estimate showing the exam fee, each vaccine, required boosters, rabies tag, and any tests. Puppy vaccination costs should be calculated across several visits rather than as one injection appointment.
Normal Reactions and Emergency Warning Signs
Mild sleepiness, reduced appetite, soreness, a small firm swelling at the injection site, or a mild fever can occur after vaccination. Contact the clinic if the signs become worse or the dog is not recovering as expected.
Facial swelling, hives, repeated vomiting or diarrhea, breathing difficulty, severe weakness, or collapse can indicate an allergic reaction and require immediate veterinary care.
Tell the veterinarian before every vaccination if the dog has reacted previously. The veterinarian may consider separating different vaccines into visits at least two weeks apart, changing the vaccine route when appropriate, observing the dog longer, or prescribing premedication. A vaccine dose should never be divided into smaller amounts at home or by request.
Can Antibody Titers Replace Boosters?
A veterinarian may discuss antibody titer testing for selected viral vaccines when a dog has a documented reaction history or another medical concern. Routine titer testing simply to avoid recommended boosters is not generally advised by AAHA.
Rabies titers are different. They may be required for certain travel documents, but they do not replace rabies vaccination required by state or local law.
A Note From Louie’s Experience
Louie, a small Yorkshire Terrier vaccinated in Malaysia, experienced noticeable fatigue after receiving a vaccine labeled 10-in-1. That reaction is worth documenting, but the product’s antigen count alone does not prove why it happened.
For a small dog with a previous reaction, record the exact product, lot number, injection date, symptoms, when they began, and how long they lasted. Bring that information to the next appointment so the veterinarian can plan the safest schedule without leaving important disease protection incomplete.
Final Vaccination Checklist
Start with the dog’s age and verified records. Complete the puppy DAPP series through at least 16 weeks, discuss the two-dose leptospirosis series from 12 weeks, and follow local rabies law. Add other vaccines only after reviewing boarding, daycare, travel, tick, wildlife, and regional disease exposure.
The best dog vaccination schedule is not the one with the largest combination number or the most injections. It is the schedule that protects against realistic risks, follows legal requirements, and accounts for the individual dog’s health and previous reactions.