Breathing problems after Feline Core Vaccine in cats

154 reports to the FDA describe breathing problems in cats given Feline Core Vaccine. That is 9.9% of all reports for this medicine, compared with 4.7% across reports for all cat medicines, so it is reported unusually often with this medicine.

154Reports

82%Marked serious

40%Recovered

31%Died or euthanised

Same dayTypical onset

How soon it started

Same day

88 59%

1–2 days

25 17%

3–7 days

8 5.4%

1–4 weeks

25 17%

Over a month

3 2.0%

How the animals did

Recovered

61 40%

Still unwell when reported

32 21%

Died

22 14%

Euthanised

26 17%

Not known

13 8.4%

Problems reported at the same time

63 41%

55 36%

50 32%

48 31%

39 25%

36 23%

26 17%

23 15%

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 breathing problems in cats?: 154 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 the same 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).

Breathing problems with similar medicines

Breathing problems after Rabies Vaccine 254 reports · 9.8% of its reports
Breathing problems after Feline Leukemia Vaccine 65 reports · 8.1% of its reports

All reported side effects of Feline Core Vaccine in cats · Medicines most reported with breathing problems