Didn't stop worms after Distemper-parvo Vaccine in dogs

The FDA has received 94 reports of didn't stop worms in dogs after Distemper-parvo Vaccine. That is 1.5% of all reports for this medicine, compared with 8.4% across reports for all dog medicines, so it is reported less often than average with this medicine.

94Reports
26%Marked serious
16%Recovered
5.3%Died or euthanised
51 daysTypical onset
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How soon it started

Same day
5 8.3%
1–2 days
2 3.3%
3–7 days
5 8.3%
1–4 weeks
15 25%
Over a month
33 55%

How the animals did

Recovered
15 16%
Still unwell when reported
9 9.6%
Died
1 1.1%
Euthanised
4 4.3%
Not known
65 69%

Problems reported at the same time

Age of the animals

Under 1 year
35
1–3 years
29
4–7 years
18
8–11 years
6
12+ years
3

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 Distemper-parvo Vaccine cause didn't stop worms in dogs?
94 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 51 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 worms with similar medicines

All reported side effects of Distemper-parvo Vaccine in dogs · Medicines most reported with didn't stop worms