Borrelia Burgdorferi Bacterin — FDA Animal & Veterinary Adverse Event (ADE) Reports
Source: openFDA animalandveterinary/event.json, the FDA Center for Veterinary Medicine (CVM) adverse event report database. Data pulled 2026-07-22. Counts are report-level: one report may list multiple reactions and multiple animals, so figures are not additive and do not imply causation. Borrelia Burgdorferi Bacterin is a active ingredient.
Total reports
Borrelia Burgdorferi Bacterin: 451
Reports by species (top entries)
- Dog 451
Top reported reactions (VEDDRA terms, top entries)
- Lack of efficacy (bacteria) - Borrelia 251
- Lack of efficacy (ectoparasite) - tick NOS 114
- Other abnormal test result NOS 97
- Lethargy (see also Central nervous system depression in 'Neurological') 28
- Vomiting 25
- Limping 23
- Diarrhoea 22
- Lack of efficacy (tick) 20
- Lack of efficacy (bacteria) - NOS 19
- Fever 15
Source JSON: pdf-raw/ade/ade_active_ingredients_2026-07-22_b13.json (openFDA animalandveterinary/event.json, pulled 2026-07-22).