Cat vaccination has a particular failure mode, and it is not disagreement about whether vaccines work. It is the carrier.
Cats who find the journey distressing get taken to a clinic less often, so their boosters lapse more than dogs' do. The medical schedule below is straightforward; the practical problem is usually the twenty minutes before the appointment.
Why kittens need more than one dose
A kitten inherits antibodies from its mother. They protect it early and simultaneously block a vaccine from working, and they fade at an age that varies from kitten to kitten, somewhere between roughly six and sixteen weeks.
A dose given while those antibodies are still present may achieve nothing. Because nobody can predict the day they fade, the course repeats doses so that at least one lands afterwards.
The kitten course, in shape
- 16 to 8 weeks: first combined vaccination, covering panleukopenia, feline herpesvirus and calicivirus
- 2Every 3 to 4 weeks after that: further doses of the combined vaccine
- 3From about 12 weeks: rabies, depending on the product used
- 4Until about 16 weeks: the course is completed
- 5Then: a booster at the interval your veterinarian advises
What each vaccine covers
- Panleukopenia: a severe and frequently fatal viral disease, especially dangerous in kittens, and hardy enough to survive in the environment
- Feline herpesvirus: a major cause of cat flu, and one that can leave cats with recurring problems for life
- Calicivirus: the other main cause of cat flu, including painful mouth ulceration
- Rabies: endemic in Pakistan and fatal once symptoms appear, essential for any cat with outdoor access
- Feline leukaemia: worth discussing for cats that go outdoors or live with other cats, since it suppresses the immune system
The indoor cat question
It is a reasonable question, and the answer is not simply yes to everything. But the case for vaccinating an indoor cat is stronger than most owners assume.
- Panleukopenia is hardy and can be carried into a home on shoes and clothing
- Indoor cats escape, and an escaped unvaccinated cat is exposed immediately
- Visiting animals, and trips to a clinic or boarding, both bring contact
- A cat that may ever be boarded or travel will need a record regardless
What may reasonably differ is the non-core list: feline leukaemia matters far more for an outdoor cat than a strictly indoor one. That is a conversation to have rather than a decision to make alone.
If the schedule has slipped
- A missed dose mid-course usually means resuming, not starting again
- An unvaccinated adult cat is typically given two doses a few weeks apart, plus rabies
- A long-lapsed booster often needs a single dose, but confirm rather than assume
- Bring any record at all, even a photograph of an old card
Making it easier on the cat
- Book a home visit: vaccination needs no clinic equipment, so this removes the journey entirely
- If travelling, leave the carrier out for several days beforehand rather than producing it on the day
- Confine the cat to one room before the appointment, so nobody spends twenty minutes retrieving them
- Put something that smells of home in the carrier
The question nobody asks
After the injection
Mild tiredness, or a small lump at the injection site for a day or two, is common. Facial swelling, vomiting, hives or difficulty breathing is not, and needs urgent attention.
If you are unsure what your cat is due, or what a partial record means, ask before guessing.
Common questions
When should a kitten start vaccinations?
Usually at six to eight weeks, with further doses every three to four weeks until around sixteen weeks. Rabies is commonly given from about twelve weeks depending on the product. Your veterinarian confirms the dates.
Do indoor cats really need vaccines?
Yes, though the list may be shorter. Panleukopenia is hardy and can be carried indoors on shoes and clothing, indoor cats escape more often than owners expect, and visiting animals bring risk in. Rabies is still worth discussing for a cat that never goes out.
What is FVRCP?
It is the combined injection most cats receive, covering feline panleukopenia, feline herpesvirus and calicivirus. The last two are the main causes of what people call cat flu.
My cat panics at the carrier. Is there another way?
Yes. Vaccination needs no clinic equipment, so a home visit works well and removes the journey entirely. If you must travel, leave the carrier out for days beforehand and confine the cat to one room before you need to leave.
How often do adult cats need boosters?
It depends on the vaccine and the cat's lifestyle. Some components protect for longer than a year while others are given annually. An outdoor cat generally needs more than a strictly indoor one. Your veterinarian sets the interval.