Does an indoor-only cat still need vaccines?
Core feline vaccines cover viruses that ride in on shoes, hands, and open doors — walls are not an immune system.
The viruses behind panleukopenia and the common respiratory infections are hardy travelers: some survive on surfaces long enough to hitchhike indoors on shoes, clothing, or a visitor's hands. Add the door that gets left open, the emergency clinic visit, the boarding stay — and the fully sheltered indoor life turns out to be less sealed than it looks.
What core vaccines buy an indoor cat
Veterinary guidelines treat the combination vaccine against panleukopenia, herpesvirus, and calicivirus as core for every cat regardless of lifestyle, precisely because exposure does not require going outside. Rabies vaccination is legally required in many regions and applies to indoor cats too. An escaped indoor cat with no immunity meets the outside world with none of a street cat's defenses.
What indoor status does change is the schedule's edges: which optional vaccines make sense and how often boosters are due can be tailored to the household's actual risk. That calibration is individual — it depends on age, health history, and whether other animals come and go — so set the plan in a vaccination consultation with your veterinarian rather than copying another cat's calendar.
MediIndex articles are for general information only and are not medical advice, diagnosis, or advertising. Outcomes vary by individual — consult a board-certified specialist for personal decisions.