DHPP Vaccine for Dogs: A Vet's Guide to the Core 5-in-1 Shot
The DHPP vaccine (also called DHLPP or Da2PP) is the core "all dogs need it" shot, protecting dogs against distemper, parvo, hepatitis, and parainfluenza. A vet breaks down exactly what it does, the schedule, current cost, and side effects.
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This pet health content about the DHPP vaccine was written and last reviewed by a veterinarian, Dr. Debora Lichtenberg, VMD.
If you have questions or concerns, call your vet, who is best equipped to ensure the health and well-being of your pet. This article is for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. See additional information.
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- 1The DHPP vaccine is the core canine shot that protects dogs against four serious viral diseases: distemper, hepatitis (adenovirus), parvovirus, and parainfluenza. It is often sold as a "5-in-1" because some labels count both adenovirus types.
- 2DHPP vs DHLPP: DHLPP is the same shot plus leptospirosis (the "L"), whatever count the clinic uses. DAPP and Da2PP are other labels for DHPP. AAHA now recommends leptospirosis as a core vaccine as of 2024.
- 3Puppies get three to four shots between 6 and 16 weeks of age, a booster at 1 year, then a booster every 3 years for adult dogs.
- 4Most side effects are mild (lethargy, soreness, low fever) and resolve within 24 to 48 hours. Severe reactions are rare.
- 5Expect roughly $28 to $46 per dose at the low-cost and retail clinics we checked in August 2026; a full-service visit adds an exam fee.
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What is the DHPP Vaccine?
DHPP vs DHLPP in one line: DHLPP is DHPP plus leptospirosis. "5-in-1" is a common marketing count for DHPP (distemper, hepatitis/adenovirus-2 covering two adenoviruses, parainfluenza, parvovirus), though some labels count four diseases and call it a 4-in-1, so DHLPP adds leptospirosis to whatever count your clinic uses. Both cover the four core viral diseases, and yes, the DHPP vaccine covers parvo: the second P stands for parvovirus. Puppies start the series at 6 to 8 weeks with boosters every 2 to 4 weeks until at least 16 weeks old, then adults are boosted 1 year later and every 3 years after that, while the leptospirosis component needs a yearly booster.
In veterinary medicine, a core vaccine is one recommended for every dog in the United States, regardless of lifestyle, unless there is a specific medical reason not to vaccinate. Rabies is also legally required.
DHPP vs DHLPP vs DA2PP vs DAPP: What's the Difference?
Your dog's medical records and your vet's website may list this vaccine under several different labels. This table shows how they compare. For a broader view of what your dog needs, see our full guide to pet vaccinations.
| Label | What it covers | Leptospirosis included? | How long it lasts |
|---|---|---|---|
| DHPP (often sold as a 4-in-1 or 5-in-1) | Distemper, hepatitis (adenovirus), parainfluenza, parvovirus | No | Booster every 3 years after the puppy series and 1-year booster |
| DHLPP (often sold as a 5-in-1 or 6-in-1) | The four DHPP components plus leptospirosis | Yes | Viral parts every 3 years; the lepto part usually yearly, since its immunity lasts about a year |
| Da2PP | Same as DHPP; the a2 names the adenovirus type 2 antigen behind the hepatitis protection | No | Same as DHPP |
| DAPP | Another label for the same core vaccine | No | Same as DHPP |
The label only tells you whether leptospirosis is included and how the maker names the hepatitis component. Ask your vet which version is on your dog's record and why. How long is the DHLPP vaccine good for? About a year for the leptospirosis part and at least 3 years for the viral parts.
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Is DHLPP the Same as Bordetella?
No, and this mix-up costs owners a boarding reservation more often than any other vaccine confusion. DHLPP is the core combination vaccine. Bordetella is a separate, non-core vaccine against Bordetella bronchiseptica, a leading cause of kennel cough. So Bordetella is not the same as DHPP either: the DHPP shot does not include it.
The practical difference is what facilities require. Most boarding kennels, groomers, and daycares want proof of both a current core vaccine and a current Bordetella vaccine, which is often renewed every 6 to 12 months. Check both dates on the record instead of assuming the 5-in-1 covers it. For who needs it, how often, and whether you can board without it, see our Bordetella vaccine guide.
What the DHPP Vaccine Protects Against: Letter by Letter
Each letter in DHPP (and DHLPP) stands for a disease.
D: Distemper
The D in DHPP stands for the canine distemper virus (CDV), a dangerous paramyxovirus infection.
Distemper has nothing to do with the temperament of your dog. The virus affects the respiratory, GI and neurologic systems as well as the skin and teeth. Many people think distemper is a historical disease with few to no cases anymore. It is not.
Although vaccination has helped control the disease, stray, wild, and unvaccinated dogs remain a reservoir for it. Can a fully vaccinated dog still get distemper? It is rare, and it is most likely when a puppy series was never finished or an immune system is compromised, which is why completing the series matters.
H: Hepatitis (Adenovirus)
The H in DHPP stands for infectious canine hepatitis (ICH), caused by an adenovirus.
Most DHPP vaccines in America use a canine adenovirus type 2 (CAV-2) antigen, which is why the more precise name is Da2PP. CAV-2 is safer than CAV-1, the virus that actually causes hepatitis, and it still cross-protects against it.
Infectious canine hepatitis ranges from mild fever to liver damage and death, and young dogs are most susceptible.
L: Leptospirosis
The L in DHLPP stands for leptospirosis, a bacterial disease spread to dogs (and people) through infected urine and contaminated water. Dogs, rodents, farm animals, and wildlife can all carry it, in cities and rural areas alike. It causes liver and kidney damage and has to be caught early, but the first signs are vague.
Important update: In 2024, the American Animal Hospital Association (AAHA) updated its canine vaccination guidelines to classify leptospirosis as a core vaccine for all dogs, reflecting the disease's widening spread. Ask your vet whether DHLPP now makes more sense for your dog than DHPP.
A few notes on the leptospirosis component:
- The lepto component gives a shorter duration of immunity (around one year) than the other components, so it needs boosting more often than the 3-year DHPP schedule.
- Modern four-serovar lepto vaccines are well tolerated, though older versions caused more reactions in small-breed dogs.
P: Parainfluenza
The first P in DHPP stands for parainfluenza virus, a highly contagious but usually less severe viral disease of dogs. It causes respiratory signs and is one of the viruses that contributes to kennel cough.
According to Merck Animal Health, the virus spreads rapidly in kennels and shelters. It is not always classed as strictly core on its own, but nearly every standard combination vaccine includes it.
P: Parvovirus
The second P in DHPP stands for parvovirus, a devastating viral disease in dogs.
Discovered in the 1970s, parvo killed huge numbers of dogs until a vaccine arrived. It attacks the GI tract, causing severe vomiting, diarrhea, and dehydration, and puppies need intense supportive care to survive. No vaccine is perfect, and the rare cases are covered in WebVet's guide to parvo in vaccinated dogs.
Until your vet confirms the series is complete, keep your puppy off dog park grass and pet store floors, where parvovirus can persist in the environment. A secure exercise pen gives a puppy room to move at home meanwhile, and our guide on when puppies can go outside explains the timing.
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DHPP Vaccine Schedule for Dogs
Dogs need the DHPP vaccine on a two-phase schedule: puppies get a dose every 2 to 4 weeks from 6 to 8 weeks old until at least 16 weeks, then a booster 1 year later, and adults are boosted every 3 years after that. If your dog gets the DHLPP version, the leptospirosis component usually needs a yearly booster even while the core viral portion stays on the 3-year cycle. For the full first-year timeline alongside rabies and other shots, see our puppy vaccination schedule.
Puppy DHPP Schedule
How often do dogs need DHLPP shots as puppies? Every 2 to 4 weeks through the puppy series. The doses are spaced that way because maternal antibodies fade at an unpredictable age, and repeating the shot on that interval catches the window where the puppy can finally respond to it. The series continues until at least 16 weeks old no matter when it started.
- 6 to 8 weeks old: First DHPP dose.
- 10 to 12 weeks old: Second DHPP dose.
- 14 to 16 weeks old: Third DHPP dose (critical to finish no earlier than 16 weeks to overcome waning maternal antibodies).
- 1 year after the final puppy dose: First annual booster. This is the dose that locks in long-term immunity.
Adult DHPP Schedule
- Every 3 years: DHPP booster. Research suggests protection likely lasts longer than 3 years in many dogs, but 3 years is the standard AAHA interval.
- Leptospirosis (DHLPP): If your dog gets the "L" version, the lepto component may need to be boosted yearly, even while DHPP itself runs on a 3-year cycle.
- First vaccine after 16 weeks: If your dog got their very first DHPP at 16 weeks or later, your vet will usually give a second dose 2 to 4 weeks afterward to ensure protection.
How long does a DHPP shot last? After the puppy series and the 1-year booster, protection from the core viral components lasts at least 3 years in most dogs, and studies suggest it often lasts longer. The leptospirosis component is the short one, at about a year.
Why the series? Most puppies receive antibodies from their mom, so they are born with some passive protection against distemper, parvo, and other diseases. These maternal antibodies start to fade sometime between 8 and 16 weeks. Until they fade, they can actually block a vaccine from working. The 3-shot series ensures at least one dose lands after maternal antibodies wane, but while the puppy is still protected in the meantime.
- MyPetID gives you a free digital vault for your dog's DHPP, rabies, and other vaccination records, with booster-date reminders and plain-language explanations of what each shot protects against. It is built to share instantly with boarding facilities, groomers, or a new vet, so you are never hunting through a folder of paper when you need proof.
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What Happens If My Dog Misses a DHLPP Booster?
For most adult dogs, a missed booster does not mean starting over. If your dog is weeks or even months past due, veterinarians typically give one booster and resume the normal interval from there. Immune memory from a completed puppy series and prior boosters does not vanish the day a due date passes.
Puppies mid-series are the real exception. If too much time passes between doses during the initial series, your veterinarian may repeat a dose to be certain protection took hold before maternal antibodies faded. The 2022 AAHA Canine Vaccination Guidelines put it plainly: when vaccines are overdue or the history is unknown, the benefits of vaccinating generally outweigh the risks, and the rule of thumb is to vaccinate when in doubt.
What to do if you have lost track:
- Call your vet with whatever record you have, even a partial one from a shelter or breeder.
- Ask whether your dog needs a single catch-up booster or a repeated series based on age and history.
- Keep the dog away from high-exposure settings such as dog parks and boarding until the vet confirms protection.
Can DHPP Be Given With Other Vaccines?
Usually yes. There is no standard pair of canine vaccines that must never be given together, and veterinarians routinely administer DHPP alongside rabies and other vaccines at a single visit. Combining visits is often better for the dog because it means fewer stressful trips and fewer needles overall.
Where judgment comes in is small dogs, young puppies, and dogs with a history of vaccine reactions. In those cases your veterinarian may deliberately space vaccines across separate visits, both to lower the chance of a reaction and to make it clear which vaccine caused one if it happens. That is a clinical call based on your dog's size, age, and history, so ask your vet how they prefer to schedule multiple vaccines rather than assuming a rule.
DHPP Vaccine Side Effects
Like any vaccine, the DHPP can cause side effects. The vast majority are mild and short-lived. Serious reactions do happen, but they are rare. Here is what to actually expect.
A thermometer, gauze, and tweezers in one pouch for the at-home checks your vet may ask for after a vaccine visit.
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Common and Mild (Most Dogs)
- Lethargy or sleepiness for 12 to 24 hours.
- Soreness or mild swelling at the injection site.
- Low-grade fever.
- Decreased appetite for a day.
These usually resolve within 24 to 48 hours without any treatment. Encourage rest, offer water, and watch your dog.
Less Common (A Small Minority of Dogs)
- Vomiting or diarrhea.
- A firm, painless lump at the injection site that fades over a few weeks.
- Mild facial swelling or hives (usually in the first few hours).
Rare But Serious (Call Your Vet Immediately)
- Anaphylaxis (severe allergic reaction): sudden collapse, severe facial swelling, pale gums, difficulty breathing, or a sudden drop in blood pressure. This is a medical emergency.
- Severe vomiting or diarrhea that lasts more than 24 hours.
- A high fever, weakness, or lethargy lasting more than a day or two.
Research consistently shows that small-breed dogs, young adult dogs, and dogs receiving multiple injections at the same visit have a slightly higher rate of short-term adverse events. If your dog has had a reaction before, tell your vet; they can stagger shots, premedicate, or adjust the schedule.
Which Dog Vaccines Are Absolutely Necessary?
The DHPP (and its DHLPP version) is the only combination canine vaccine considered core for all dogs in the United States. Rabies is also legally required.
Other vaccines (Bordetella, canine influenza, Lyme disease, rattlesnake toxoid, and so on) are non-core. They are recommended only after a complete risk assessment of the dog's lifestyle and geography. Leptospirosis moved into the core category in AAHA's 2024 update, which is why the DHLPP version of the vaccine is increasingly common.
The 2022 AAHA Canine Vaccination Guidelines (with the 2024 leptospirosis update) are the definitive reference. Veterinary immunologists and researchers devise these recommendations based on scientific data to protect the general population of dogs.
Vaccines cover only half of preventive care. Core shots protect against the viral and bacterial diseases in this article, while parasites need their own year-round plan. Most veterinarians pair a core vaccine schedule with monthly or long-acting flea, tick, and heartworm prevention, because ticks in particular transmit diseases no core vaccine covers.
- Monthly prescription chewables such as Simparica Trio cover fleas, ticks, heartworm, and intestinal worms in one dose, which suits dogs who spend time in tick country.
- Longer-acting prescription options such as Bravecto run about 12 weeks per chew, which helps if remembering a monthly dose is the hard part.
- Over-the-counter collars such as the Seresto collar cover fleas and ticks for up to 8 months without a prescription, though they do not include heartworm protection.
Ask your veterinarian which product fits your dog's weight, age, and regional parasite risk. Prescription products require a current vet relationship, and heartworm preventives require a negative heartworm test first.
How Much Does the DHPP Vaccine Cost?
DHPP prices vary by region and clinic type, so treat any number as an example, not a national average. The figures below come from two dated provider pages that WebVet's dog vaccination cost guide checked in August 2026. AAHA and AVMA guidelines set the schedule, not the bill, so neither publishes prices.
Typical Price Ranges (2026)
| What you are paying for | Price | Notes |
|---|---|---|
| Single DHPP dose, low-cost provider | $28 | Low Cost Pet Vax services page |
| Single DHPP dose, retail clinic | $46 | Petco Vetco, Philadelphia location page |
| Puppy series, low-cost provider | $180 total | Three sequential packages at $45, $65, and $70; each bundles different services |
| Puppy bundle, retail clinic | $269 | Three distemper-parvo doses plus other listed services |
| Full-service vet visit | Usually higher | An exam fee is added; ask your own clinic for a written estimate |
Sources: the Low Cost Pet Vax services page and the Petco Vetco Philadelphia vaccination page. For puppy-specific totals, see our puppy shots cost guide.
What Drives the Price
- Location: Urban practices charge significantly more than rural or suburban ones.
- Clinic type: Full-service vets include an exam, weight check, and individual attention. Low-cost clinics focus on the shot itself.
- Bundle versus single shot: Puppy packages often bundle DHPP doses, stool checks, deworming, and exams; wellness plans spread cost over monthly payments.
- DHPP versus DHLPP: Adding the lepto component can raise the per-dose price, so ask for both quotes.
Vaccination clinics at pet stores can be cheaper up front, but they skip the exam, have no ongoing relationship with your dog, and sometimes up-sell vaccines your dog does not actually need. Use them as a supplement, not a replacement, for a primary veterinarian. Vaccines are only one line of a puppy's first-year budget. Year-round parasite prevention is the other, and a long-acting option such as a Seresto collar spreads that cost over 8 months.
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Where to Get Low-Cost DHPP Shots
If a full-service clinic visit stretches your budget, the same vaccine is available for less through several channels:
- Humane societies and animal shelters: many run public vaccine clinics with core shots at a fraction of clinic pricing, often bundled with microchipping.
- Mobile and pop-up vaccine clinics: these travel to pet stores and community sites on weekends and price core vaccines individually.
- Retail veterinary clinics: chains inside pet stores typically price core vaccines below a full-service hospital while still providing a licensed veterinarian.
- Farm and feed stores: retailers such as Tractor Supply sell over-the-counter combination vaccines for owner administration. These do not include rabies, which legally requires a veterinarian in most states, and they come with no exam, no reaction support, and paperwork many boarding facilities will not accept.
The tradeoff at a low-cost vaccine clinic or humane society event is time and continuity rather than vaccine quality. You get the same product, but usually no wellness exam, longer waits, and no established record with a veterinarian who knows your dog. For a healthy adult on a routine 3-year booster, those low-cost options compare well against full-service clinic pricing. For a puppy in the middle of the series, the exam that comes with a regular clinic visit is worth paying for.
Can You Give the DHPP Shot at Home?
Feed stores sell DHPP vaccines for owner administration, and many owners ask how to give a puppy a 5-in-1 shot themselves. The safer answer is to let a clinic do it. A vet-given shot comes with an exam, proper cold storage, a reaction plan, and a record that boarding facilities accept. Rabies must be given by a veterinarian in most states, and a puppy mid-series should not be injected at home without your vet's say-so. If cost is the barrier, a humane society or low-cost clinic gives you the same product with a licensed person and paperwork.
Antibody (Titer) Testing: Can You Skip a Booster?
Do dogs really need the DHPP vaccine every year? For the core viral components, no. Adult dogs on a completed series are boosted every 3 years under current guidelines, and titer testing can sometimes extend that further. The exception is the leptospirosis component in DHLPP, which is boosted yearly because bacterial immunity fades faster than viral immunity.
Many owners worry about over-vaccinating. After a dog has received several DHPP doses, a blood test called a titer can measure antibody levels against distemper, parvo, and adenovirus.
A 2023 Italian study of 1,027 dogs (Prevalence of Serum Antibody Titers Against Core Vaccine Antigens in Italian Dogs) found that protective antibody titers against canine parvovirus, distemper virus, and adenovirus persist for years in the majority of properly vaccinated adult dogs, supporting the current 3-year booster interval.
- What titers measure: The level of specific antibodies in the blood at the moment of testing.
- What titers do not guarantee: A positive titer does not absolutely guarantee protection if your dog is exposed to a heavy viral load. Absence of a titer does not always mean absence of immunity, because memory cells can respond to a challenge.
- When titers make sense: Senior dogs, dogs with previous vaccine reactions, or owners wanting to personalize the booster schedule with their vet.
Vaccine Controversies
Vaccines, vaccine schedules, and which and how many vaccines to administer to pets are topics people feel strongly about. Most vets listen to client concerns and tailor a vaccine plan for each individual pet.
- Past over-vaccination: Dogs were over-vaccinated in decades past, before duration-of-immunity studies clarified how long protection really lasts.
- The risk of the pendulum swinging back: If too many dogs go unvaccinated, diseases like parvo and distemper reemerge. Herd immunity matters.
Vaccinations protect individual dogs and reduce the reservoir of virus in the environment. The majority of vaccinated dogs lessen the risk for unvaccinated or stray dogs. In shelter situations or areas with a large stray population, outbreaks of deadly viral diseases still occur.
"The fewer animals that are getting the vaccine, the greater the likelihood that you're going to have a firestorm if something that is that highly communicable comes along," says Dr. Chris Brockett, DVM, owner of Saratoga Veterinary Hospital in Wilton, New York, and a past president of the state's Veterinary Medical Society.
In this video, Dr. Clayton Greenway, DVM, explains more about the contentious nature of vaccines for pets:
Personalize Your Dog's DHPP Schedule
When tailoring a vaccination program for your individual dog, especially how often to boost DHPP or DHLPP, consider the following questions with your vet.
What vaccines do dogs really need every year? For most dogs, none of the core shots: DHPP runs every 3 years, and rabies follows your state's law. The yearly ones are risk-based, such as the leptospirosis component in DHLPP, Bordetella for boarding or daycare, and canine influenza or Lyme where your dog's exposure justifies them.
Questions to Consider
- Does your dog have close contact with many different dogs?
- Does your dog meet and play with other dogs?
- Does your dog stay in a boarding kennel?
- Does your dog go to doggy daycare?
- Does your dog go to a grooming facility?
- Does your dog participate in dog shows or agility?
- Does your dog have exposure to a shelter environment?
- Does your dog visit dog parks?
- Does your dog run free or hunt?
In addition to that checklist, your vet will consider age, health status, lifestyle, and previous vaccine history. Here are two quick case examples from my own practice.
Case Study Examples
Lady Gaga: A 10-year-old Toy Poodle living in a suburban neighborhood who is rarely off-leash. Gaga has received a DHPP vaccine every 3 years for the past 10 years. Does she still need a booster every 3 years until she's 16? Probably not. Titers may be enough going forward, and her lifestyle is low risk.
Homer: A 9-year-old coonhound. Whoops, we can't find Homer right now, because he broke through his fence again and will be gone for several hours, as he often does. When he comes home, his human will reward him by taking him to the dog park. Should Homer continue to get a 3-year DHPP booster (and probably the DHLPP version given his exposure to wildlife)? Yes, I think so.
Unexpected health issues (including vaccine-preventable ones that still happen) can be expensive. MetLife Pet Insurance offers a wellness add-on on some policies that reimburses part of routine vaccine costs, so check the plan. See our editorial spotlight for details.
Final Thoughts on the DHPP Vaccine
The DHPP vaccine is one of the highest-impact things you can do for your dog's long-term health. Proper core vaccination, paired with a schedule personalized to your dog's actual lifestyle, prevents diseases that used to kill huge numbers of dogs every year.
- Modern veterinary medicine continues to improve vaccines and vaccine protocols. Proper DHPP vaccination is essential for maintaining your dog's health and preventing the spread of infectious diseases. Staying informed and working closely with your veterinarian is how you give your dog the best possible care.
Frequently Asked Questions About the DHPP Vaccine
The DHPP vaccine is the core canine vaccine against four viral diseases: distemper, hepatitis (adenovirus), parvovirus, and parainfluenza. It is often sold as a 5-in-1, though labels vary, and the DHLPP version adds leptospirosis to whatever count the clinic uses. Veterinarians call it a core vaccine because it is recommended for every dog in the United States regardless of lifestyle, unless a specific medical reason applies. These diseases are widespread, expensive to treat, and frequently fatal in unvaccinated dogs, which is why the core canine vaccine schedule starts in puppyhood and continues with adult boosters for life.
Puppies get three DHPP doses between 6 and 16 weeks, then a booster at 1 year. Adult dogs get a DHPP booster every 3 years. If your dog is on the DHLPP version, the leptospirosis component may need to be boosted yearly even while DHPP itself is on a 3-year schedule.
Yes. DHPP is classified as a core vaccine by the American Animal Hospital Association (AAHA), meaning it is recommended for every dog unless there is a specific medical reason not to vaccinate. The diseases it protects against (especially parvovirus and distemper) are often fatal, and they still circulate in unvaccinated populations.
AAHA currently recommends boosting adult dogs every 3 years, but studies including a 2023 Italian prevalence study show that protective antibody titers for distemper, parvo, and adenovirus often persist much longer than that in many dogs. Your vet can discuss whether titer testing is appropriate for your individual dog.
The 4-in-1 vaccine (labeled DHPP, DAPP, or Da2PP) protects against distemper, hepatitis, parvovirus, and parainfluenza. The 5-in-1 vaccine (DHLPP) adds a fifth component, leptospirosis, which is a bacterial disease spread through infected urine and contaminated water. As of 2024, AAHA recommends leptospirosis as a core vaccine for all dogs, so the 5-in-1 combination vaccine is becoming the standard in most clinics. The practical difference for owners is the booster interval, because the leptospirosis component needs a yearly booster while the viral components run on a 3-year cycle.
Most dogs experience only mild side effects: lethargy, soreness at the injection site, a slight fever, or a day of reduced appetite. These usually resolve in 24 to 48 hours. Less commonly, dogs may have vomiting, diarrhea, or mild facial swelling. Severe allergic reactions (anaphylaxis) are rare but are a medical emergency; call your vet immediately if you see collapse, pale gums, or difficulty breathing.
In August 2026, single DHPP doses were $28 at Low Cost Pet Vax and $46 at a Petco Vetco clinic in Philadelphia, as checked by WebVet. Puppy packages ran $180 total at the low-cost provider and $269 at the retail clinic. Full-service vets usually add an exam fee, so ask your own clinic for a written estimate. These are examples, not national averages.
Breakthrough parvo infection is very unusual in properly vaccinated adult dogs. Puppies that have not completed the full 16-week series are by far the most at-risk group, because maternal antibodies can block early doses and leave a window before their own immunity takes over. A properly completed DHPP or DHLPP series gives strong, long-lasting parvo immunity, which is why finishing the puppy series on schedule matters so much. Until that series is complete, keep puppies away from dog parks, pet stores, and other high-traffic areas where parvovirus survives in the environment.
What happens if your dog misses a DHLPP booster is usually far less dramatic than owners fear: in most cases you do not start over. If an adult dog is weeks or even months overdue, veterinarians typically give one booster and resume the normal interval. Puppies mid-series are the exception, because if too much time passes between doses your vet may repeat a dose to be sure protection took hold. The 2022 AAHA Canine Vaccination Guidelines advise that when vaccines are overdue or the history is unknown, the benefits of vaccinating generally outweigh the risks, so call your vet rather than waiting for the next annual visit.
No. DHLPP is the core combination vaccine covering distemper, hepatitis, leptospirosis, parainfluenza, and parvovirus. Bordetella is a separate, non-core vaccine against Bordetella bronchiseptica, one of the main causes of kennel cough. Because parainfluenza also contributes to kennel cough, owners often assume DHLPP covers boarding requirements. It does not. Most boarding facilities, groomers, and daycares require a separate Bordetella vaccine, so confirm both are current before your reservation.
There is no standard pair of canine vaccines that should not be given together. Veterinarians routinely give DHPP alongside rabies and other vaccines at a single visit, and current guidelines support that practice for most dogs. Judgment comes in for very small dogs, young puppies, and dogs with a history of vaccine reactions, where your vet may space doses across separate visits to lower the chance of a reaction and make any reaction easier to attribute. That call belongs to the veterinarian who knows your dog's history.
References
- American Animal Hospital Association. 2022 AAHA Canine Vaccination Guidelines (updated 2024 to classify leptospirosis as core).
- Day, Michael J., et al. "Forty Years of Canine Vaccination." Advances in Experimental Medicine and Biology, via National Library of Medicine, PMC7149312.
- Dall'Ara, Paola, et al. "Prevalence of Serum Antibody Titers Against Core Vaccine Antigens in Italian Dogs." Frontiers in Veterinary Science, via National Library of Medicine, PMC9961557, 2023.
- American Veterinary Medical Association. "Canine Parvovirus." Client brochure.
- Creevy, Kate E., DVM, DACVIM. "Overview of Infectious Canine Hepatitis." Merck Veterinary Manual.
- Ettinger, Stephen, DVM, DACVIM, and Edward C. Feldman, DVM, DACVIM. Textbook of Veterinary Internal Medicine, 7th ed. Saunders, 2010.
VMD
Dr. Debora Lichtenberg, VMD, is a small animal and exotics veterinarian who has been practicing medicine for over 30 years. A graduate of the University of Pennsylvania School of Veterinary Medicine, Dr. Lichtenberg also trained at the Philadelphia Zoo. She now practices in the New York City area and lives in the West Village with her husband and her rescued pets, Cocoa and OG. Dr. Lichtenberg has been writing for Petful for many years, and she has been recognized with Certificates of Excellence from both the Dog Writers Association of America and the Cat Writers Association of America.
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