Your kitten's first months
When should a kitten receive the next vaccination?
Kitten core vaccines are usually given as a series rather than a single early dose. The 2024 WSAVA guidelines recommend doses every 2 to 4 weeks, with the final kitten dose delivered at 16 weeks of age or older. Use the calculator as a discussion aid, then confirm the actual product and schedule with your veterinarian.
Use the documented date, vaccine name, clinic, and administering veterinarian when available. A verbal description such as "first shot completed" is not enough to reconstruct the series.
Free date check
See a broad next-dose discussion window
Dates are calculated in this browser. They are not stored or transmitted by this tool.
Next-dose discussion window
- Date your kitten reaches 16 weeks
- Age on the most recent recorded dose
This date range organizes broad guideline information for a veterinary discussion. The licensed product, current health, location, lifestyle, and prior record can change the plan.
Why is there no single fixed second or third dose date?
Antibodies received from the mother can interfere with early vaccination, and the time at which those antibodies decline varies between kittens. A series of doses reduces the chance that the entire vaccination course falls inside that window of interference.
WSAVA identifies feline parvovirus, feline calicivirus, and feline herpesvirus-1 vaccines as core worldwide. Its global schedule is broad by design: multiple kitten doses 2 to 4 weeks apart, ending at 16 weeks or older. Local rules and product labels still matter.
What to check after a documented first dose
- Confirm the actual administration date and vaccine product.
- Discuss the next dose within the product and guideline interval.
- Record the date that each dose is actually administered.
- Check whether the final kitten core dose occurs at 16 weeks or older.
- Ask about later revaccination and lifestyle-specific vaccines.
The labels "first," "second," and "third" do not guarantee that every kitten completes the series in exactly three visits. A veterinarian may adjust the number or interval when vaccination started early, records are uncertain, or exposure risk is high.
Tell the clinic about your kitten's condition that day
Eating and activity
Note whether food intake and movement are normal for this kitten.
Vomiting or diarrhea
Record when it began, how often it happened, and any stool changes.
Eyes and nose
Mention discharge, sneezing, or other recent respiratory signs.
Earlier reactions
Report swelling, collapse, or unusual lethargy after a prior dose.
If your kitten seems unwell, contact the clinic and describe the current signs rather than independently delaying or proceeding based only on an online calendar.
Other vaccines depend on location and lifestyle
Rabies requirements and feline leukemia virus recommendations vary with geography, age, outdoor access, household exposure, travel, shelter history, and local law. Bring those details to the appointment so the plan can be individualized.
It does not know the vaccine label, examination findings, regional disease prevalence, or legal requirements. It only turns two dates into a broad discussion range.