Drug profile

The FDA adverse-event record for Feline Calicivirus, Strain F-9, Passage 7, Lot A;Feline Panleukopenia Virus, Str

111 FDA reports name Feline Calicivirus, Strain F-9, Passage 7, Lot A;Feline Panleukopenia Virus, Str, a high-volume drug in the CVM extract. Species, reactions, and outcomes follow.

#741 of 2,679
by report volume (all drugs)
111
adverse-event reports
16.2%
death-coded share
Cat
most-reported species
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Corpus placement

According to the FDA Center for Veterinary Medicine openFDA adverse-event extract, Feline Calicivirus, Strain F-9, Passage 7, Lot A;Feline Panleukopenia Virus, Str ranks #740 of 2679 by total reports (111) and #332 of 1130 by death-coded share (16.2%). 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)
#740
This drug, reports of 2679
#332
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 Panleukopenia Virus, Str has 111 reports now versus 93 in that prior snapshot: 18 more (19.4%).

Report change
+18
Death-coded reports
+1
Death-coded share
−2.1 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 Panleukopenia Virus, Str changes

Signature read: death-coded report count at 18 is the most distinctive stamp on Feline Calicivirus, Strain F-9, Passage 7, Lot A;Feline Panleukopenia Virus, Str'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.
111
Total Reports
18
Deaths Reported
16.2%
Death-coded share of reports

Active Ingredients

Feline Calicivirus, Strain F-9, Passage 7, Lot A;Feline Panleukopenia Virus, Str

Administration Routes

SubcutaneousUnknown

Species Affected

Cat 111

Most Affected Breeds

Domestic Shorthair 73
Domestic Longhair 8
Domestic Mediumhair 6
Bengal 4
Siamese 4
Cat (unknown) 4
American Curl Shorthair 3
Maine Coon 3
Russian 2
Persian 1

Most Reported Reactions

Lethargy (see also Central nervous system depression in Neurological) 45
Vomiting 21
Not eating 20
Emesis (multiple) 20
Fever 17
Intentional misuse 17
Diarrhoea 16
Lack of efficacy - NOS 15
Anaphylaxis 12
Anorexia 12
Decreased appetite 11
Death 11

Outcome Breakdown

Ongoing
59 (53.2%)
Recovered/Normal
26 (23.4%)
Died
11 (9.9%)
Euthanized
7 (6.3%)
Outcome Unknown
7 (6.3%)
Recovered with Sequela
1 (0.9%)

Feline Calicivirus, Strain F-9, Passage 7, Lot A;Feline Panleukopenia Virus, Str: high report volume 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 Panleukopenia Virus, Str, both floored at ≥50 reports so the neighborhoods stay in the advertised mass.

Similar death-coded share

Nearest other drugs by death-coded share (16.2% here), distinct from the volume row.

Mirtazapine 16.3% Nystatin, Neomycin Sulfate, Thiostrpton & Traimcinolone 16.2% Anesthesia 16.1% Emodepside/Praziquantel 16.3%

What to do with this drug

  • Compare Feline Calicivirus, Strain F-9, Passage 7, Lot A;Feline Panleukopenia Virus, Str'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 Panleukopenia Virus, Str (#741 of 2,679 by report volume); death-coded 16.2%. PlainBreed drug row · death-coded report count stamp 18 · 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 →