Allergic reaction after Leptospirosis Vaccine in dogs

1,683 reports to the FDA describe allergic reaction in dogs given Leptospirosis Vaccine. That is 21% of all reports for this medicine, compared with 2.3% across reports for all dog medicines, so it is reported unusually often with this medicine.

1,683Reports

74%Marked serious

50%Recovered

3.9%Died or euthanised

Same dayTypical onset

How soon it started

Same day

1,350 85%

1–2 days

89 5.6%

3–7 days

21 1.3%

1–4 weeks

60 3.8%

Over a month

77 4.8%

How the animals did

Recovered

846 50%

Recovered with lasting effects

2 0.1%

Still unwell when reported

667 40%

Died

45 2.7%

Euthanised

20 1.2%

Not known

103 6.1%

Problems reported at the same time

911 54%

762 45%

369 22%

331 20%

278 17%

232 14%

220 13%

200 12%

Age of the animals

Under 1 year

139

1–3 years

928

4–7 years

401

8–11 years

154

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 Leptospirosis Vaccine cause allergic reaction in dogs?: 1,683 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).

Allergic reaction with similar medicines

Allergic reaction after Rabies Vaccine 2,423 reports · 24% of its reports
Allergic reaction after Bordetella Vaccine 2,153 reports · 23% of its reports
Allergic reaction after Lyme Vaccine 481 reports · 6.9% of its reports
Allergic reaction after Distemper-parvo Vaccine 1,223 reports · 19% of its reports

All reported side effects of Leptospirosis Vaccine in dogs · Medicines most reported with allergic reaction