Mass after Rabies Vaccine in dogs

The FDA has received 30 reports of mass in dogs after Rabies Vaccine. That is 0.3% of all reports for this medicine, compared with 0.1% across reports for all dog medicines, so it is reported unusually often with this medicine.

30Reports

67%Marked serious

20%Recovered

30%Died or euthanised

92 daysTypical onset

How soon it started

Same day

1 4.3%

1–2 days

4 17%

3–7 days

0 0.0%

1–4 weeks

3 13%

Over a month

15 65%

How the animals did

Recovered

6 20%

Still unwell when reported

6 20%

Died

1 3.3%

Euthanised

8 27%

Not known

9 30%

Problems reported at the same time

11 37%

9 30%

9 30%

9 30%

8 27%

8 27%

8 27%

6 20%

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 Rabies Vaccine cause mass in dogs?: 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 92 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).

Mass with similar medicines

Mass after Leptospirosis Vaccine 31 reports · 0.4% of its reports

All reported side effects of Rabies Vaccine in dogs · Medicines most reported with mass