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When should you vaccinate your kitten?

Published on 6/19/2026

At what age does a kitten's vaccination begin?

A kitten's initial vaccination generally begins around 8 weeks of age. At this stage, the kitten no longer benefits from the immunity passed on by its mother and becomes vulnerable. The initial vaccination usually requires several injections a few weeks apart, followed by boosters.

Important: there is no universal schedule that applies to all kittens. The starting age, the number of injections, the diseases targeted and the booster frequency depend on each animal and on current veterinary guidelines. Only your vet can establish the protocol suited to your kitten.

Does lifestyle affect vaccination?

Yes. A cat that goes outside, mixes with other animals, stays in a boarding facility or travels won't necessarily have the same needs as a strictly indoor cat. Some vaccines, such as the rabies vaccine, may be required to travel abroad.

It is precisely because these situations vary that the vaccination schedule is discussed with the vet, who assesses your cat's actual exposure before recommending a protocol.

How to avoid forgetting booster shots?

One of the challenges of vaccination is boosters: once the initial vaccination is done, regular boosters are needed to maintain protection. This is often where people lose track.

Petzo doesn't decide the schedule for you: you record the dates prescribed by your vet, and the app sends you a reminder at the right time. You stay in control of the protocol, Petzo just handles the memory.

Facts & figures

Frequently asked questions

Does an indoor cat need to be vaccinated?

That's a question for your vet. Even an indoor cat can be exposed to certain risks (accidental escape, indirect contact, boarding). The vet assesses the situation and recommends the appropriate protocol.

How much does vaccinating a cat cost?

In Belgium, a vaccine injection costs on average between €40 and €70, with a kitten's initial vaccination being more expensive as it requires several injections. Prices vary by clinic and protocol.

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