Drug profile

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

Name: Feline Calicivirus, Strain F-9, Passage 7, Lot A;Feline Viral Rhinotracheitis, S - FDA Animal Adverse Event Reports
Creator: PlainBreed
License: https://creativecommons.org/publicdomain/zero/1.0/

387 FDA reports name Feline Calicivirus, Strain F-9, Passage 7, Lot A;Feline Viral Rhinotracheitis, S, a high-volume drug in the CVM extract. Species, reactions, and outcomes follow.

#360 of 2,679
by report volume (all drugs): 387
adverse-event reports: 20.2%
death-coded share: Cat
most-reported species

Compiled by PlainBreed

Verify with FDA CVM →

Corpus placement

According to the FDA Center for Veterinary Medicine openFDA adverse-event extract, Feline Calicivirus, Strain F-9, Passage 7, Lot A;Feline Viral Rhinotracheitis, S ranks #360 of 2679 by total reports (387) and #240 of 1130 by death-coded share (20.2%). National dual: Milbemycin Oxime + Spinosad is #1 of 2679 drugs by total adverse-event reports (149,624) at death-coded-share rank 965 of 1130 drugs with at least 50 reports (2.3%); separately, Atlantic Salmon Transgenic Whole (Opafp-Ghc2 Rdna Construct Inserted Into The A-Locus In The Eo-1A Lineage) is #1 highest death-coded share at 97.8% (report rank #821).

149,624
Milbemycin Oxime + Spinosad reports (#1): 97.8%
Atlantic Salmon Transgenic Whole (Opafp-Ghc2 Rdna Construct Inserted Into The A-Locus In The Eo-1A Lineage) death share (#1): #360
This drug, reports of 2679: #240
This drug, death share of 1130

Report volume reflects how common a breed or drug is and how often owners and vets file — not actual risk. Death-coded share ranks are limited to entries with enough reports to be meaningful. The two maps do not agree at #1.

Release-over-release change

What changed in the latest FDA data snapshot

PlainBreed reconstructed the prior snapshot from dated openFDA partitions through 2025 Q4, then compared it with the 2026-07-27 openFDA export. Feline Calicivirus, Strain F-9, Passage 7, Lot A;Feline Viral Rhinotracheitis, S has 387 reports now versus 387 in that prior snapshot: 0 the same number of (0.0%).

Report change: +0
Death-coded reports: +0
Death-coded share: +0.0 pts

This compares reported-event counts in two source snapshots. It does not establish a change in real-world risk, product safety, or disease incidence.

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

Signature read: death-coded report count at 78 is the most distinctive stamp on Feline Calicivirus, Strain F-9, Passage 7, Lot A;Feline Viral Rhinotracheitis, S's FDA AER row.

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

Deaths Reported

20.2%

Death-coded share of reports

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: high death-coded share in the FDA AER row

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.

High-volume nationwide drug peers

Two openFDA-derived peer sets for Feline Calicivirus, Strain F-9, Passage 7, Lot A;Feline Viral Rhinotracheitis, S, both floored at ≥50 reports so the neighborhoods stay in the advertised mass.

Similar report volume

Nearest other drugs by FDA report count (387 here).

Canine Da2Ppv (Orig S-P Us) Lv 389 Canine Vaccine 389 S-Adenosylmethionine 385 Molidustat 383

Similar death-coded share

Nearest other drugs by death-coded share (20.2% here), distinct from the volume row.

Galliprant 20.1% Benazapril 20.3% Amprolium Ion 20.0% Gentamicin 20.0%

What to do with this drug

Compare Feline Calicivirus, Strain F-9, Passage 7, Lot A;Feline Viral Rhinotracheitis, S's report volume and death-coded share against similar drugs nationwide. See similar drugs
Read how death-coded share differs from a mortality rate before drawing conclusions. Understanding adverse events
Browse the full drug directory to compare report counts across products. All drugs

A report does not prove a drug caused the reaction; consult a veterinarian before acting on this data.

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

openFDA Animal & Veterinary Adverse Events (FDA CVM) for Feline Calicivirus, Strain F-9, Passage 7, Lot A;Feline Viral Rhinotracheitis, S (#360 of 2,679 by report volume); death-coded 20.2%. PlainBreed drug row · death-coded report count stamp 78 · vintage 2025.

Informational only. FDA adverse-event reports are voluntary and do not prove causation; consult a veterinarian before acting on them. Verify with FDA CVM →