Drug profile

The FDA adverse-event record for Equine Influenza Virus, Killed Virus + Equine Rhinopneumonitis Virus, Killed Virus

36 adverse-event reports submitted to the FDA Center for Veterinary Medicine reference Equine Influenza Virus, Killed Virus + Equine Rhinopneumonitis Virus, Killed Virus. See the species affected, top reactions, and outcomes below.

36
adverse-event reports
19.4%
death-coded share
Horse
most-reported species
8
Lack of efficacy - NOS - top reaction
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Important: Adverse event reports do not establish that a drug caused or contributed to the event. Consult your veterinarian before making treatment decisions.
36
Total Reports
7
Deaths Reported
19.4%
Death Rate

Active Ingredients

Equine Influenza Virus, Killed VirusEquine Rhinopneumonitis Virus, Killed Virus

Administration Routes

IntramuscularNasalUnknown

Species Affected

Horse 36

Most Affected Breeds

Quarter Horse 13
Horse (unknown) 4
Arab 3
Thoroughbred 2
Pura Raza Española (Andalusian) 2
Paint 2
Saddlebred - American 1
Crossbred Equine/horse 1
Welsh Mountain Pony 1
Horse (other) 1

Most Reported Reactions

Lack of efficacy - NOS 8
Fever 6
Other abnormal test result NOS 6
Colic 6
Anorexia 6
Depression 5
Injection site pain 4
Death by euthanasia 4
Nasal discharge 3
Lameness 3
Injection site swelling 3
Rolling 3

Outcome Breakdown

Recovered/Normal
19 (51.4%)
Outcome Unknown
6 (16.2%)
Ongoing
5 (13.5%)
Euthanized
4 (10.8%)
Died
3 (8.1%)

Equine Influenza Virus, Killed Virus + Equine Rhinopneumonitis Virus, Killed Virus Adverse Event Insights

36 reports name Equine Influenza Virus, Killed Virus + Equine Rhinopneumonitis Virus, Killed Virus; 7 recorded a death outcome (19.4% of reported events, not a population-level mortality rate). Active ingredients: Equine Influenza Virus, Killed Virus, Equine Rhinopneumonitis Virus, Killed Virus. Administration routes: Intramuscular, Nasal, Unknown.

By species: Horse (36 reports). By breed: Quarter Horse (13), Horse (unknown) (4), Arab (3).

Leading clinical signs: Lack of efficacy - NOS (8), Fever (6), Other abnormal test result NOS (6), Colic (6). Outcome, 37 coded reports: Recovered/Normal leads at 51.4%.

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.