Unresponsive after Feline Leukemia Vaccine in cats

21 reports to the FDA describe unresponsive in cats given Feline Leukemia Vaccine. That is 2.6% of all reports for this medicine, compared with 0.6% across reports for all cat medicines, so it is reported unusually often with this medicine.

21Reports

100%Marked serious

9.5%Recovered

33%Died or euthanised

3 daysTypical onset

How soon it started

Same day

4 31%

1–2 days

2 15%

3–7 days

1 7.7%

1–4 weeks

1 7.7%

Over a month

5 38%

How the animals did

Recovered

1 4.8%

Recovered with lasting effects

1 4.8%

Still unwell when reported

3 14%

Died

5 24%

Euthanised

2 9.5%

Not known

9 43%

Problems reported at the same time

Injection site reaction

11 52%

Death

7 33%

Lethargy

7 33%

Liver problems

6 29%

Abnormal radiograph finding

6 29%

Kidney problems

5 24%

Abnormal cytology

5 24%

Hypoalbuminaemia

4 19%

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 Leukemia Vaccine cause unresponsive in cats?: 21 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 3 days 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).

Unresponsive with similar medicines

Unresponsive after Rabies Vaccine 46 reports · 1.8% of its reports

All reported side effects of Feline Leukemia Vaccine in cats · Medicines most reported with unresponsive