Cat Vaccines Explained: What Your Alhambra Vet Actually Recommends 🐱

Cat vaccine conversations go sideways fast. Some owners want everything on the schedule. Others have read something online and want to skip the whole thing. Most people are somewhere in the middle, genuinely trying to figure out what their cat actually needs versus what's optional. Here's our honest take from our Alhambra cat clinic.

The Core Vaccines: Non-Negotiable for Every Cat

Two vaccines fall into the "every cat, no exceptions" category:

• FVRCP (Feline Viral Rhinotracheitis, Calicivirus, Panleukopenia) — This is the feline equivalent of DHPP in dogs. It protects against three highly contagious and potentially fatal diseases. Kittens get a series starting at 8 weeks, with boosters every 3–4 weeks until 16 weeks. After the initial kitten series, adults typically get a booster at one year, then every three years.
• Rabies — Required by California law, period. Regardless of whether your cat goes outside. The vaccine protects both your cat and your family, and it's required for licensing in Los Angeles County. Kittens get it at 12–16 weeks; adults typically receive it every one to three years depending on the vaccine used.

The Lifestyle Vaccine: FeLV

Feline Leukemia Virus (FeLV) is the one that comes down to your cat's lifestyle. FeLV is transmitted through close contact with infected cats — shared food bowls, mutual grooming, bites, and from mother to kitten. It can't survive long outside the body, so casual outdoor exposure isn't the main concern. The concern is cats that spend time with other cats whose FeLV status is unknown.

• Outdoor cats or cats in multi-cat households with unknown status cats: FeLV vaccine is strongly recommended.
• Indoor-only cats with no exposure to other cats: Risk is low, and many vets consider FeLV optional after the initial kitten series. We'll discuss this with you based on your cat's actual situation.

All kittens should receive FeLV vaccination as part of their series, because life circumstances change — an indoor kitten might become an outdoor cat, or you might adopt another cat down the road.

What We Don't Routinely Recommend

There are a handful of other feline vaccines available — FIV, Chlamydophila, Bordetella, FIP. We don't routinely recommend these for most cats in Alhambra. FIV has limited efficacy data and interferes with FIV testing. The others are typically only relevant in specific high-risk situations like catteries or shelters. If you're in one of those situations, we'll talk about it. Otherwise, you don't need to worry about them.

Kitten Vaccine Schedule at a Glance

• 8 weeks: FVRCP first dose, FeLV first dose, fecal exam, dewormer
• 12 weeks: FVRCP second dose, FeLV second dose
• 16 weeks: FVRCP third dose, Rabies
• 12–16 months: FVRCP booster, Rabies booster, FeLV booster if indicated
• Adults (after initial series): FVRCP every 3 years, Rabies every 1–3 years depending on vaccine

Over-Vaccination: A Real Concern We Take Seriously

Vaccine-associated sarcoma (a type of cancer at injection sites) is rare but real in cats. It's one reason we don't just pile on every available vaccine — we use only what's genuinely needed for your individual cat, we rotate injection sites, and we use the lowest-adjuvant vaccines available. More is not better when it comes to cat vaccines. The goal is appropriate protection with the fewest doses necessary.

If your cat has had reactions to vaccines in the past, tell us before the appointment. We can premedicate, use different vaccine formulations, and keep them under observation. Vaccine reactions are manageable — we just need to know to plan for them.

Can We Check Titers Instead of Vaccinating?

Yes, for FVRCP. Titer testing measures the level of antibodies in your cat's blood to see whether they're likely still protected from a previous vaccine. If titers are adequate, some vets (including us) will accept that in lieu of a booster for that particular vaccine.

The tradeoff: titer testing costs more than the vaccine itself, it doesn't work for rabies (California law requires the vaccine regardless of titers), and it's not a perfect predictor of protection. But for cats who've had reactions, or very senior cats where you want to minimize interventions, it's a reasonable conversation to have.

Bringing an Adult Cat In — What to Expect

If you adopted an adult cat and aren't sure what they've had, that's fine. Bring any paperwork you have, and we'll start from where we are. For unvaccinated adults, we essentially run the same series as kittens — two FVRCP doses 3–4 weeks apart, then rabies, then adult schedule from there. It sounds like a lot of visits, but we'll space them out to minimize stress for your cat.

We see cats from all over — Alhambra, South Pasadena, Pasadena, Highland Park, San Marino — at our clinic on Main Street. Book a cat wellness exam online or call (626) 441-1314. We're here Monday through Friday.