Didn't work as expected after Leptospirosis Vaccine in dogs

The FDA has received 1,226 reports of didn't work as expected in dogs after Leptospirosis Vaccine. That is 15% of all reports for this medicine, compared with 13% across reports for all dog medicines.

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How soon it started

How the animals did

Problems reported at the same time

Age of the animals

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 didn't work as expected in dogs?

1,226 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 124 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).

Didn't work as expected with similar medicines

• Didn't work as expected after Rabies Vaccine 482 reports · 4.9% of its reports
• Didn't work as expected after Bordetella Vaccine 880 reports · 9.4% of its reports
• Didn't work as expected after Lyme Vaccine 4,661 reports · 67% of its reports
• Didn't work as expected after Distemper-parvo Vaccine 651 reports · 10% of its reports

All reported side effects of Leptospirosis Vaccine in dogs · Medicines most reported with didn't work as expected