Drug profile

The FDA adverse-event record for Clostridium Chauvoei, Strain F, Lot No. 2-84;Clostridium Novyi, 8296

25 adverse-event reports submitted to the FDA Center for Veterinary Medicine reference Clostridium Chauvoei, Strain F, Lot No. 2-84;Clostridium Novyi, 8296. See the species affected, top reactions, and outcomes below.

25
adverse-event reports
88.0%
death-coded share
Cattle
most-reported species
20
Death - 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.
25
Total Reports
22
Deaths Reported
88.0%
Death Rate

Active Ingredients

Clostridium Chauvoei, Strain F, Lot No. 2-84;Clostridium Novyi, 8296

Administration Routes

SubcutaneousUnknown

Species Affected

Cattle 25

Most Affected Breeds

Mixed (Cattle) 18
Cattle (other) 2
Limousin 2
Jersey 2
Aberdeen Angus 1

Most Reported Reactions

Death 20
Lack of efficacy - NOS 13
Necropsy performed 9
Malaise 3
Decreased appetite 3
Injection site swelling 3
Anaphylaxis 2
Lethargy (see also Central nervous system depression in Neurological) 2
Lack of efficacy (bacteria) - Mannheimia haemolytica 2
Pneumonia 2
Musculoskeletal disorder NOS 2
Pulmonary disorder NOS 2

Outcome Breakdown

Died
21 (53.8%)
Outcome Unknown
10 (25.6%)
Recovered with Sequela
3 (7.7%)
Recovered/Normal
2 (5.1%)
Ongoing
2 (5.1%)
Euthanized
1 (2.6%)

Clostridium Chauvoei, Strain F, Lot No. 2-84;Clostridium Novyi, 8296 Adverse Event Insights

25 reports name Clostridium Chauvoei, Strain F, Lot No. 2-84;Clostridium Novyi, 8296; 22 recorded a death outcome (88.0% of reported events, not a population-level mortality rate). Active ingredient: Clostridium Chauvoei, Strain F, Lot No. 2-84;Clostridium Novyi, 8296. Administration routes: Subcutaneous, Unknown.

By species: Cattle (25 reports). By breed: Mixed (Cattle) (18), Cattle (other) (2), Limousin (2).

Leading clinical signs: Death (20), Lack of efficacy - NOS (13), Necropsy performed (9), Malaise (3). Outcome, 39 coded reports: Died leads at 53.8%.

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.