Loss of appetite after Chlamydia Psittaci Killed + Feline Core Vaccine in cats

The FDA has received 26 reports of loss of appetite in cats after Chlamydia Psittaci Killed + Feline Core Vaccine. That is 46% of all reports for this medicine, compared with 14% across reports for all cat medicines, so it is reported unusually often with this medicine.

26Reports
38%Marked serious
42%Recovered
15%Died or euthanised
9 daysTypical onset
SponsoredWorried about your pet? Ask a veterinarian online, 24/7

How soon it started

Same day
4 17%
1–2 days
3 13%
3–7 days
4 17%
1–4 weeks
12 50%
Over a month
1 4.2%

How the animals did

Recovered
11 42%
Still unwell when reported
2 7.7%
Died
2 7.7%
Euthanised
2 7.7%
Not known
9 35%

Problems reported at the same time

22 85%
Fever
10 38%
Vomiting
10 38%
Elevated globulins
8 31%
Hyperglycaemia
7 27%
Weight loss
6 23%
Blood problems
5 19%
Liver problems
5 19%

Age of the animals

Under 1 year
5
1–3 years
9
4–7 years
3
8–11 years
3
12+ years
4

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 Chlamydia Psittaci Killed + Feline Core Vaccine cause loss of appetite in cats?
26 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 9 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).

Loss of appetite with similar medicines

All reported side effects of Chlamydia Psittaci Killed + Feline Core Vaccine in cats · Medicines most reported with loss of appetite