Drug profile

The FDA adverse-event record for Unknown Distemper Vaccine

19 adverse-event reports submitted to the FDA Center for Veterinary Medicine reference Unknown Distemper Vaccine. See the species affected, top reactions, and outcomes below.

19
adverse-event reports
5.3%
death-coded share
Dog
most-reported species
8
Vomiting - top reaction
Verify with FDA CVM →
Important: Adverse event reports do not establish that a drug caused or contributed to the event. Consult your veterinarian before making treatment decisions.
19
Total Reports
1
Deaths Reported
5.3%
Death Rate

Active Ingredients

Unknown Distemper Vaccine

Administration Routes

UnknownSubcutaneous

Species Affected

Dog 16
Cat 3

Most Affected Breeds

Retriever - Labrador 4
Domestic Shorthair 3
Shepherd Dog - German 2
Mountain Dog - Bernese 2
Shar Pei 1
Terrier - Jack Russell 1
Portuguese Water Dog 1
Crossbred Canine/dog 1
Corgi - Welsh Cardigan 1
Siberian Husky 1

Most Reported Reactions

Vomiting 8
Diarrhoea 5
Aggression 3
Lethargy (see also Central nervous system depression in Neurological) 3
Dermal cyst(s) 2
INEFFECTIVE, HEARTWORM LARVAE 2
Pruritus 2
Hyperactivity 2
Lethargy (see also Central nervous system depression in 'Neurological') 2
Shaking 2
Ataxia 2
Emesis (multiple) 2

Outcome Breakdown

Outcome Unknown
8 (42.1%)
Recovered/Normal
7 (36.8%)
Ongoing
3 (15.8%)
Died
1 (5.3%)

Unknown Distemper Vaccine Adverse Event Insights

19 reports name Unknown Distemper Vaccine; 1 recorded a death outcome (5.3% of reported events, not a population-level mortality rate). Active ingredient: Unknown Distemper Vaccine. Administration routes: Unknown, Subcutaneous.

By species: Dog (16 reports), Cat (3 reports). By breed: Retriever - Labrador (4), Domestic Shorthair (3), Shepherd Dog - German (2).

Leading clinical signs: Vomiting (8), Diarrhoea (5), Aggression (3), Lethargy (see also Central nervous system depression in Neurological) (3). Outcome, 19 coded reports: Outcome Unknown leads at 42.1%.

Read these counts as reporting volume, not risk: per our methodology, a widely-prescribed drug will rack up more raw FDA reports in a given year than a rarely-used one at an identical true rate, so we recommend comparing within similar-exposure products rather than across the full 2025 catalog.

Source: FDA Center for Veterinary Medicine openFDA Animal & Veterinary Adverse Events (CVM AER) · 2025

Every figure on PlainBreed is rendered directly from FDA openFDA adverse event data, no number is typed in by an editor. This page draws directly on FDA openFDA data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.