Didn't stop ticks after Leptospirosis Vaccine in dogs

The FDA has received 199 reports of didn't stop ticks in dogs after Leptospirosis Vaccine. That is 2.5% of all reports for this medicine, compared with 2.3% across reports for all dog medicines.

199Reports

7.5%Marked serious

0.5%Recovered

1.5%Died or euthanised

155 daysTypical onset

How soon it started

Same day

0 0.0%

1–2 days

1 1.0%

3–7 days

1 1.0%

1–4 weeks

3 3.1%

Over a month

93 95%

How the animals did

Recovered

1 0.5%

Still unwell when reported

14 7.0%

Euthanised

3 1.5%

Not known

181 91%

Problems reported at the same time

Didn't work as expected

176 88%

7 3.5%

6 3.0%

5 2.5%

4 2.0%

4 2.0%

Drug dose omission

4 2.0%

Vomiting

4 2.0%

Age of the animals

Under 1 year

1–3 years

100

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 Leptospirosis Vaccine cause didn't stop ticks in dogs?: 199 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 155 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 stop ticks with similar medicines

Didn't stop ticks after Rabies Vaccine 35 reports · 0.4% of its reports
Didn't stop ticks after Bordetella Vaccine 21 reports · 0.2% of its reports
Didn't stop ticks after Lyme Vaccine 2,599 reports · 37% of its reports

All reported side effects of Leptospirosis Vaccine in dogs · Medicines most reported with didn't stop ticks