Vaccination is one of the more confusing areas of dog ownership to research online, largely because so much written advice describes one country’s schedule as though it applied everywhere. It does not. What counts as a routine vaccine, how often boosters are given, and what is legally required for travel or kennel admission differ significantly between countries, and sometimes between regions within the same country, because they depend on local disease risk, national regulation and the requirements of specific boarding and travel systems.
This guide explains the general principles behind vaccination programmes without prescribing a specific schedule, so you understand what your vet is doing and why, and so you know which questions to bring to that conversation rather than trying to source the answer from a general article. No vaccine, product or dose is named here, because the right choice for your dog depends on your vet’s assessment of their individual risk, age, health status and location, not on a generic recommendation.
Core versus non-core, as a general concept
Veterinary vaccination programmes generally sort vaccines into two broad groups. Core vaccines protect against diseases that are widespread, often serious or fatal, and recommended for essentially all dogs in a given region regardless of individual lifestyle. Non-core vaccines protect against diseases where the risk depends heavily on how and where a dog lives, such as exposure to specific water sources, wildlife, other dogs in group settings, or particular geographic areas where a disease is more common.
Which specific diseases fall into which group varies by country, because disease prevalence itself varies by country. A disease treated as core in one region because it is common and serious there might be considered non-core, or not routinely vaccinated against at all, somewhere it barely exists. This is exactly why a schedule copied from an overseas website or an old leaflet is not a safe basis for decisions about your own dog. Your vet builds a programme based on local veterinary body guidance and your dog’s specific circumstances, including lifestyle factors like boarding, travel, exposure to wildlife, and time spent around water or livestock.
Why puppies need a course rather than one dose
Puppies are usually vaccinated in a series of doses over several weeks rather than a single visit, and the reason is biological rather than a matter of manufacturer preference. Puppies receive antibodies from their mother before birth and through early nursing, and those maternal antibodies protect the puppy for a period but also interfere with a vaccine’s ability to trigger the puppy’s own immune response. The problem is that nobody can predict exactly when maternal antibody protection will fade in an individual puppy, since it varies between litters and between individual puppies within the same litter.
Giving a course of doses spaced weeks apart is the practical solution: it increases the likelihood that at least one dose lands after maternal antibodies have dropped enough to let the puppy’s own immune system respond properly, while still offering some protection earlier in the process. This is also why puppies are usually kept away from unvaccinated dogs and high-risk environments until their vet confirms the course is complete, a topic covered separately in guidance on early socialisation for puppies such as the puppy socialisation checklist, which explains how to balance this caution against a puppy’s genuine need for early experience of the world.
Why boosters exist and what titre testing is
Protection from a vaccine is not permanent, and how quickly it fades depends on the specific disease and vaccine type, which is again a decision for your vet rather than something this guide can generalise. Booster vaccination exists to maintain protection over a dog’s lifetime, and the interval between boosters, like the initial schedule, varies by disease, by vaccine and by local guidance.
Some owners ask about titre testing as an alternative to routine reboosting. A titre test measures the level of specific antibodies in a dog’s blood as an indicator of ongoing immunity, and some owners use it to inform decisions about whether a booster is currently needed rather than simply reboostering on a fixed calendar. Titre testing has real limitations: it is not available or validated for every vaccine, a measurable antibody level does not always correspond precisely to full protection, and it cannot replace vaccines required for legal or travel purposes, which typically must follow a specified schedule regardless of titre results, although some travel routes also require a separate rabies antibody blood test. If you are interested in titre testing, raise it directly with your vet, who can tell you whether it is a sensible option for your dog’s specific vaccines and circumstances.
Why location changes almost everything
Disease risk is genuinely regional. Some tick-borne and water-borne diseases are common in certain countries or even certain river catchments and essentially absent elsewhere, and vaccination policy for those diseases follows that pattern rather than treating all dogs identically. Rabies vaccination requirements are a clear example: they are often driven as much by legal and travel requirements as by direct disease risk in a given country, and international travel with a dog typically requires proof of a rabies vaccination given according to a specific, sometimes strict, schedule and timing relative to travel dates.
Boarding kennels, dog daycare and grooming salons frequently set their own minimum vaccination requirements as a condition of admission, commonly including protection against diseases that spread easily where dogs mix in close contact, and these requirements can be stricter than the minimum a vet might otherwise recommend for a dog that never boards. If you plan to board your dog, check requirements well ahead of the date you need them, since some vaccines need to be given a minimum number of weeks before they take effect for admission purposes.
What to actually do with this information
Do not follow a specific schedule you find written down for a different country, and be cautious with schedules found in older material even for your own country, since guidance is reviewed and updated periodically. The single reliable source for your dog is a conversation with your own vet, who takes into account your dog’s age, health, lifestyle, local disease prevalence and any travel or boarding plans you have.
If you are moving country, planning international travel with your dog, or considering a boarding stay, raise it with your vet well in advance rather than close to the date, since some requirements involve minimum timeframes that cannot be compressed. And if you are simply trying to understand why your vet has recommended a particular schedule for your own dog, ask them directly what is driving that specific recommendation. That answer will be accurate for your dog and your location in a way that no general guide, including this one, can be.
Sources
- Guidelines for the Vaccination of Dogs and Cats, covering core and non core vaccines and regional recommendations, World Small Animal Veterinary Association