Didn't prevent heartworm after Lyme Vaccine in dogs

The FDA has received 37 reports of didn't prevent heartworm in dogs after Lyme Vaccine. That is 0.5% of all reports for this medicine, compared with 13% across reports for all dog medicines, so it is reported less often than average with this medicine.

37Reports
24%Marked serious
2.7%Recovered
0.0%Died or euthanised
299 daysTypical onset
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How soon it started

Same day
1 5.9%
1–2 days
0 0.0%
3–7 days
0 0.0%
1–4 weeks
1 5.9%
Over a month
15 88%

How the animals did

Recovered
1 2.7%
Still unwell when reported
12 32%
Not known
24 65%

Problems reported at the same time

Age of the animals

Under 1 year
1
1–3 years
27
4–7 years
7
8–11 years
2
12+ years
0

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 prevent heartworm in dogs?
37 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 299 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 prevent heartworm with similar medicines

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