Behaviour change after Feline Leukemia Vaccine in cats
The FDA has received 81 reports of behaviour change in cats after Feline Leukemia Vaccine. That is 10% of all reports for this medicine, compared with 5.4% across reports for all cat medicines, so it is reported unusually often with this medicine.
81Reports
60%Marked serious
41%Recovered
9.9%Died or euthanised
1 daysTypical onset
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How soon it started
How the animals did
Problems reported at the same time
Age of the animals
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 Leukemia Vaccine cause behaviour change in cats?
- 81 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).
Behaviour change with similar medicines
- Behaviour change after Rabies Vaccine 234 reports · 9.0% of its reports
- Behaviour change after Feline Core Vaccine 124 reports · 8.0% of its reports
- Behaviour change after Distemper-parvo Vaccine 24 reports · 8.7% of its reports
All reported side effects of Feline Leukemia Vaccine in cats · Medicines most reported with behaviour change