Drug profile

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

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

24
adverse-event reports
75.0%
death-coded share
Cattle
most-reported species
12
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.
24
Total Reports
18
Deaths Reported
75.0%
Death Rate

Active Ingredients

Clostridium Chauvoei, Strain F, Lot No. 2-84; Clostridium Haemolyticum, Strain I

Administration Routes

Subcutaneous

Species Affected

Cattle 24

Most Affected Breeds

Cattle (other) 9
Aberdeen Angus 4
Holstein-Friesian also known as Holstein 4
Jersey 3
Mixed (Cattle) 3
Hereford cattle 1

Most Reported Reactions

Death 12
Sudden death 4
Lack of efficacy (bacteria) - NOS 4
Anaphylactic-type reaction 3
Unexplained death 2
Myositis 2
Lack of efficacy - NOS 2
Staggering 2
Weakness 2
Wheezing 1
No sign 1
Urticaria 1

Outcome Breakdown

Died
18 (50.0%)
Outcome Unknown
9 (25.0%)
Recovered/Normal
8 (22.2%)
Recovered with Sequela
1 (2.8%)

Clostridium Chauvoei, Strain F, Lot No. 2-84; Clostridium Haemolyticum, Strain I Adverse Event Insights

24 reports name Clostridium Chauvoei, Strain F, Lot No. 2-84; Clostridium Haemolyticum, Strain I; 18 recorded a death outcome (75.0% of reported events, not a population-level mortality rate). Active ingredient: Clostridium Chauvoei, Strain F, Lot No. 2-84; Clostridium Haemolyticum, Strain I. Administration route: Subcutaneous.

By species: Cattle (24 reports). By breed: Cattle (other) (9), Aberdeen Angus (4), Holstein-Friesian also known as Holstein (4).

Leading clinical signs: Death (12), Sudden death (4), Lack of efficacy (bacteria) - NOS (4), Anaphylactic-type reaction (3). Outcome, 36 coded reports: Died leads at 50.0%.

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.