Drug profile

The FDA adverse-event record for Mycoplasma Bovis

16 adverse-event reports submitted to the FDA Center for Veterinary Medicine reference Mycoplasma Bovis. See the species affected, top reactions, and outcomes below.

16
adverse-event reports
93.8%
death-coded share
Cattle
most-reported species
13
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.
16
Total Reports
15
Deaths Reported
93.8%
Death Rate

Active Ingredients

Mycoplasma Bovis

Administration Routes

SubcutaneousUnknown

Species Affected

Cattle 16

Most Affected Breeds

Cattle (other) 5
Mixed (Cattle) 5
Holstein-Friesian also known as Holstein 3
Cattle (unknown) 1
Jersey 1
Salers 1

Most Reported Reactions

Death 13
Lack of efficacy - NOS 9
Lack of efficacy (virus) - coronavirus - NOS 3
Necropsy performed 3
Lack of efficacy (mycoplasma) - NOS 3
Lack of efficacy (virus) - bovine viral diarrhoea virus 2
Lack of efficacy (bacteria) - Histophilus somni 2
Lack of efficacy (bacteria) - Mannheimia haemolytica 2
Lack of efficacy (bacteria) - Pasteurella multocida 2
Found dead 1
Bloated 1
INEFFECTIVE, ANTIBIOTIC 1

Outcome Breakdown

Died
14 (45.2%)
Outcome Unknown
7 (22.6%)
Ongoing
5 (16.1%)
Euthanized
3 (9.7%)
Recovered/Normal
2 (6.5%)

Mycoplasma Bovis Adverse Event Insights

16 reports name Mycoplasma Bovis; 15 recorded a death outcome (93.8% of reported events, not a population-level mortality rate). Active ingredient: Mycoplasma Bovis. Administration routes: Subcutaneous, Unknown.

By species: Cattle (16 reports). By breed: Cattle (other) (5), Mixed (Cattle) (5), Holstein-Friesian also known as Holstein (3).

Leading clinical signs: Death (13), Lack of efficacy - NOS (9), Lack of efficacy (virus) - coronavirus - NOS (3), Necropsy performed (3). Outcome, 31 coded reports: Died leads at 45.2%.

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.