Elevated temperature after Feline Core Vaccine in cats

The FDA has received 30 reports of elevated temperature in cats after Feline Core Vaccine. That is 1.9% of all reports for this medicine, compared with 0.4% across reports for all cat medicines, so it is reported unusually often with this medicine.

30Reports

43%Marked serious

43%Recovered

0.0%Died or euthanised

1 daysTypical onset

How soon it started

Same day

10 37%

1–2 days

6 22%

3–7 days

2 7.4%

1–4 weeks

7 26%

Over a month

2 7.4%

How the animals did

Recovered

13 43%

Still unwell when reported

14 47%

Not known

3 10%

Problems reported at the same time

19 63%

17 57%

10 33%

7 23%

6 20%

4 13%

4 13%

3 10%

Age of the animals

Under 1 year

1–3 years

4–7 years

8–11 years

12+ years

About this medicine

Type: vaccine.

Mild, short-lived lethargy, soreness or a small lump at the injection site are the most commonly reported vaccine reactions.

Questions owners ask

Can Feline Core Vaccine cause elevated temperature in cats?: 30 reports link the two, but a report alone does not prove the medicine was the cause: other illnesses, other medicines or coincidence can be involved. Your vet can judge it for your animal.
How soon after a dose was it reported?: In half of the reports with dates, it started within 1 day of the first dose.
What should I do?: Don't give another dose until you've spoken to your vet, and keep the packaging so you can tell them the product and dose. Your vet can also report it to the FDA (or you can, through the manufacturer or FDA form 1932a).

Elevated temperature with similar medicines

Elevated temperature after Rabies Vaccine 50 reports · 1.9% of its reports
Elevated temperature after Feline Leukemia Vaccine 27 reports · 3.4% of its reports

All reported side effects of Feline Core Vaccine in cats · Medicines most reported with elevated temperature