Didn't stop ticks after Lyme Vaccine in dogs

The FDA has received 2,599 reports of didn't stop ticks in dogs after Lyme Vaccine. That is 37% 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.

2,599Reports
22%Marked serious
3.5%Recovered
0.8%Died or euthanised
278 daysTypical onset
SponsoredWorried about your pet? Ask a veterinarian online, 24/7

How soon it started

Same day
12 1.1%
1–2 days
1 0.1%
3–7 days
1 0.1%
1–4 weeks
18 1.7%
Over a month
1,020 97%

How the animals did

Recovered
82 3.2%
Recovered with lasting effects
9 0.3%
Still unwell when reported
1,391 54%
Died
2 0.1%
Euthanised
20 0.8%
Not known
1,095 42%

Problems reported at the same time

Didn't work as expected
2,224 86%
Drug dose omission
80 3.1%
Underdose
34 1.3%
Systemic disorder
32 1.2%
Overdose
28 1.1%
Lameness
22 0.8%
Liver problems
22 0.8%
Death
21 0.8%

Age of the animals

Under 1 year
316
1–3 years
1,342
4–7 years
566
8–11 years
295
12+ years
67

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 Lyme Vaccine cause didn't stop ticks in dogs?
2,599 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 278 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

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