Decreased haematocrit after Rabies Vaccine in dogs

44 reports to the FDA describe decreased haematocrit in dogs given Rabies Vaccine. That is 0.4% 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.

44Reports
93%Marked serious
9.1%Recovered
41%Died or euthanised
19 daysTypical onset
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How soon it started

Same day
2 5.6%
1–2 days
5 14%
3–7 days
5 14%
1–4 weeks
11 31%
Over a month
13 36%

How the animals did

Recovered
4 9.1%
Still unwell when reported
16 36%
Died
5 11%
Euthanised
13 30%
Not known
6 14%

Problems reported at the same time

Age of the animals

Under 1 year
8
1–3 years
6
4–7 years
18
8–11 years
5
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 Rabies Vaccine cause decreased haematocrit in dogs?
44 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 19 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).

Decreased haematocrit with similar medicines

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