Drug profile

The FDA adverse-event record for Feline Calicivirus, Strain F-9, Passage 7, Lot A;Feline Viral Rhinotracheitis, S

387 adverse-event reports submitted to the FDA Center for Veterinary Medicine reference Feline Calicivirus, Strain F-9, Passage 7, Lot A;Feline Viral Rhinotracheitis, S. See the species affected, top reactions, and outcomes below.

387
adverse-event reports
20.2%
death-coded share
Cat
most-reported species
159
Lethargy (see also Central nervous system depression in 'Neurological') - 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.
387
Total Reports
78
Deaths Reported
20.2%
Death Rate

Active Ingredients

Feline Calicivirus, Strain F-9, Passage 7, Lot A;Feline Viral Rhinotracheitis, S

Administration Routes

SubcutaneousSubconjunctivalIntramuscular

Species Affected

Cat 386
Dog 1

Most Affected Breeds

Domestic Shorthair 244
Domestic Longhair 40
Domestic Mediumhair 23
Cat (other) 16
Siamese 11
Ragdoll 9
Maine Coon 7
Bengal 6
Cat (unknown) 6
Sphynx 4

Most Reported Reactions

Lethargy (see also Central nervous system depression in 'Neurological') 159
Fever 151
Vomiting 104
Anorexia 83
Not eating 72
Lethargy (see also Central nervous system depression in Neurological) 52
Weight loss 47
Decreased appetite 44
Death 39
Lack of efficacy - NOS 38
Dehydration 37
Anaemia NOS 36

Outcome Breakdown

Ongoing
207 (52.9%)
Recovered/Normal
91 (23.3%)
Died
43 (11.0%)
Euthanized
36 (9.2%)
Outcome Unknown
14 (3.6%)

Feline Calicivirus, Strain F-9, Passage 7, Lot A;Feline Viral Rhinotracheitis, S Adverse Event Insights

387 reports name Feline Calicivirus, Strain F-9, Passage 7, Lot A;Feline Viral Rhinotracheitis, S; 78 recorded a death outcome (20.2% of reported events, not a population-level mortality rate). Active ingredient: Feline Calicivirus, Strain F-9, Passage 7, Lot A;Feline Viral Rhinotracheitis, S. Administration routes: Subcutaneous, Subconjunctival, Intramuscular.

By species: Cat (386 reports), Dog (1 reports). By breed: Domestic Shorthair (244), Domestic Longhair (40), Domestic Mediumhair (23).

Leading clinical signs: Lethargy (see also Central nervous system depression in 'Neurological') (159), Fever (151), Vomiting (104), Anorexia (83). Outcome, 391 coded reports: Ongoing leads at 52.9%.

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.